Welcome to the jeepExperts.com in-depth web page on the WK Generation Jeep Grand Cherokee tire stress monitor techniques. Did we miss something? Please get in contact with us and inform us about it!
Two TPM techniques are supplied for 2005-2010 Grand Cherokees. The base model, included Standard with all Laredo fashions, consists of tire stress monitoring sensors hooked up to every wheel by the valve stem mounting gap, a central receiver module (WCM) and a amber coloured indicator lamp. A sensor is put in within the spare wheel if the car is provided with an identical full measurement spare wheel and tire meeting
The superior TPM system is out there on the Limited, Overland and SRT8. It is just like the one within the earlier technology WJ in that precise pressures are displayed for every of the 4 tires. The show is included into the instrument cluster.
Wireless Control Module (WCM)
The receiver circuit for the TPM system is built-in into the WCM. The WCM additionally consists of the Remote Keyless Entry (RKE) receiver and the Sentry Key Immobilizer (SKIM) receiver. All three receivers share a quantity or frequent parts. The WCM decodes the RF indicators transmitted by every of the car’s tire stress sensors. The decoded data is used to find out if “warning” or “fault” situations exist throughout the TPM system.
The WCM communicates with the module that controls the “ISO Indicator Lamp” and the textual content show (Premium system), by way of the car bus system (CAN B).
Upon detection of a warning or fault situation, the WCM will ship a request to light up the Indicator Lamp. Also, upon detection of a warning or fault situation, the show module will ship a request to sound the “chime”. A chime will solely be requested as soon as per ignition cycle per warning or fault situation detected.
The WCM will retailer all warning and fault situations, placard stress values, low-pressure threshold values and low stress threshold hysterisis values in reminiscence that may be accessed by diagnostic communication. If new sensors are launched to the car, the information saved for the sensor being changed will likely be deleted.
The WCM will retailer all wheel sensor ID’s and areas and faults in reminiscence that may be accessed by diagnostic communication. All different knowledge values transmitted from every wheel sensor shall be saved within the WCM reminiscence.
Tire stress sensors
One tire stress sensor is mounted to every wheel rather than the normal tire valve stem. Each sensor has an inside battery that lasts as much as 10 years. The battery will not be serviceable. At the time of battery failure, the sensor have to be changed.
The TPM system operates on both a 315MHz radio frequency (2005-2007 Grand Cherokee) or a 433MHz frequency (2008-2009 Grand Cherokee). All 2005-2009 export fashions use 433MHz. Starting with the 2008 mannequin 12 months, many home autos switched to the 433MHz frequency. These autos are the Grand Cherokee, Commander, 300C, Charger, Challenger, minivans, and the brand new 2009 Journey.
The 315MHz sensors won’t work within the 433MHz system, and can trigger a system malfunction warning within the Tire Pressure Monitoring System. Also, the vendor TPM/RKE Analyzer software won’t learn the sensors if set to the improper 12 months. It is essential to you’ll want to use the right half quantity when changing sensors, and to set the TPM/RKE Analyzer software to the correct car and mannequin 12 months.
The valve stem caps and cores used are particularly designed for the tire stress monitoring sensors. Although just like commonplace valve stem caps and cores, they’re completely different. The valve stem cap has a particular seal inside to maintain moisture and corrosion out. The valve stem core has a particular nickel coating to guard from corrosion.
The battery operated tire stress sensors lay dormant (Park Mode), then wake and begin transmitting (Drive Mode) when the car first reaches speeds over 20 mph (32 km/h). Once the wheels cease rotating for a interval of roughly 20 minutes, the sensors shut down till once more awaken. Although not transmitting as when in Drive Mode, whereas in Park Mode, the sensors nonetheless transmit roughly as soon as each 13 hours to let the receiver know air stress standing at the moment.
Using an RF sign, every sensor transmits tire stress knowledge roughly as soon as each minute. Each sensor’s (transmitter) broadcast is uniquely coded in order that the wi-fi management module (WCM) can monitor the state of every of the sensors on the 4 rotating street wheels. The WCM routinely learns and shops the sensor’s ID whereas driving after a sensor has been changed. There isn’t any formal retraining process vital.
CAUTION 1: The use of tire sealants is strictly prohibited for autos outfitted with the Tire Pressure Monitoring system. Tire sealants can clog tire stress sensors.
CAUTION 2: Tire stress sensor valve stem caps and cores are specifically designed for the sensors. Due to threat of corrosion, don’t use an ordinary valve stem cap or core in a tire stress sensor rather than the unique gear type sensor cap and core.
CAUTION 3: Do not try to put in a tire stress sensor in an aftermarket wheel. Use tire stress sensors in authentic type manufacturing facility wheels solely.
CAUTION 4: Any time a sensor is to be put in in a wheel, a brand new seal and washer have to be put in on the stem to make sure air tight sealing.
NOTE: TPM thresholds have been established for the unique tire measurement outfitted on the car. Use authentic measurement tires solely to take care of system accuracy.
Part numbers in Red textual content are the most recent revisions and what’s beneficial for substitute. Part numbers are present as of April, 2016. |
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| Description | Part # | |
| Sensor – WK fashions | 2005-2006 (315MHz)68001696AB (consists of 56053030AC sensor, nut and cap) outmoded by 68078861AB (consists of 56029479AB sensor, nut and cap) 2007 (besides SRT8) (315MHz)56053036AA (consists of sensor and cap)
2007 (SRT8) (315MHz)68001696AB (consists of 56053030AC sensor, nut and cap)
2008-2010 (433MHz)56029359AC (consists of sensor and cap)
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| Sensor – WH export fashions | 2005-2007 (433MHz)68001698AB (consists of 56053031AD sensor and cap) outmoded by: 68078768AB (consists of sensor and cap) 2008-2010 56029359AC |
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| Cap package (5 caps and stems) | 68024258AA (2005-2007)
68023890AA (2008-2010) |
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| Nut | 56053033AB (2005-2007)
56053037AB (2008-2010) |
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The “Tire Pressure Monitoring Indicator Lamp” will illuminate within the instrument cluster, and an audible chime will likely be activated when a number of tire pressures is low. The “Tire Pressure Monitoring Indicator Lamp” will flash on and off for ten seconds when a system fault is detected. The flash cycle will repeat each ten minutes or till the fault situation is eliminated and reset.
The base Tire Pressure Monitoring System consists of the next parts:
- Receiver Module
- 4 (or 5*) Wheel Sensors
- Amber Colored Tire Pressure Monitoring Indicator Lamp
*A sensor is situated within the spare wheel if the car is provided with an identical full measurement spare wheel and tire meeting.
Base system operation
The tire stress monitoring system is designed to function with out lack of perform for all sorts of normal tire constructions. (Function with several types of run flat tire constructions must be evaluated for every design). The wheel sensor shall monitor tire stress, air temperature contained in the tire, wheel acceleration and the sensor inside battery standing for all 4 lively street tires. The sensor will broadcast this data, together with a novel 32 bit ID, to a central receiver circuit situated contained in the WCM. The data obtained by the WCM will likely be decoded and saved in reminiscence (RAM) within the WCM. If a “warning” or “fault” situation exists, the WCM will ship a bus message request to light up the amber coloured indicator lamp and to sound the chime.
If the WCM detects a warning or fault situation at ignition key “on” it’s going to wait ten seconds +/- 10 % earlier than sending the primary request to light up the Indicator Lamp. This will guarantee that the show module has concluded its bulb verify interval. The show module will request a chime as soon as per ignition cycle for every “warning” or “fault” situation detected. A “warning” or “fault” situation will stay enabled till the issue inflicting the situation is corrected and eliminated/reset.
The WCM shall repeatedly monitor for the receipt of tire stress RF message transmissions from the wheel sensors throughout each the ignition key “on” and key “off” cycles. The wheel sensor ID’s and the placement of every sensor (e.g. Tire 1, Tire 2 and so forth.) are saved within the WCM non-volatile reminiscence throughout the preliminary Manufacturing Plant Process, or throughout a service process, as required. The beneficial “placard stress”, “low-pressure threshold” and “Hysteresis Pressure Values” for the tires put in on the car, are saved within the WCM non-volatile reminiscence throughout the preliminary Manufacturing Plant Process, or throughout a service process, as required.
The TPM System will proceed to warn the motive force of low tire stress so long as the situation exists, and won’t flip off the indicator lamp till the tire stress is at or above the Low Pressure (lamp) OFF threshold (see placard desk under). The system will routinely replace and the TPM warning lamp will extinguish as soon as the up to date tire pressures have been obtained.
The tire stress will fluctuate with temperature by about 1 psi (6.9 kPa) for each 12°F (6.5°C). This signifies that when the skin temperature decreases, the tire stress will lower. Tire stress ought to all the time be set primarily based on chilly inflation tire stress (placard stress). This is outlined because the tire stress after a car has not been pushed for greater than 3 hours – and in outdoors ambient temperature. The tire stress will even improve because the car is pushed – that is regular and there ought to be no adjustment for this elevated stress. For a system fault, the system will return to regular as soon as the WCM receives a sound transmission from that sensor location.
Base system monitoring
This system will encompass Tire Pressure Monitoring (TPM) sensors hooked up to every wheel by the valve stem mounting gap, a Wireless Control Module (WCM) and a yellow TPM telltale lamp. A TPM sensor shall be put in within the spare wheel if the car is provided with an identical full measurement spare wheel and tire meeting.
Sensor studying mode
Each sensor’s (transmitter) broadcast is uniquely coded in order that the wi-fi management module (WCM) can monitor the state of every of the sensors on the 4 rotating street wheels. The WCM can routinely be taught and retailer the sensor’s ID whereas driving inside 10 minutes repeatedly above 15 m.p.h. (24 Km/h) after a sensor has been changed, the car have to be stationary for greater than 20 minutes as a way to provoke the educational sequence.
Spare tire sensor programming
On autos outfitted with a Tire Pressure Monitoring System (TPMS), when the spare tire stress sensor is changed with a brand new stress sensor, a diagnostic scan software MUST be used to run a routine that can program the brand new stress sensor ID into the Wireless Control Module (WCM), generally known as the Sentry Key Remote Entry Module (SKREEM). Please copy the ID quantity off of the brand new stress sensor earlier than putting in it into the spare tire. Then observe the programming steps outlined within the diagnostic scan software for: ‘Learn Spare Tire Sensor ID’ beneath ‘Miscellaneous Functions’ for the ‘WCM/Wireless Control Module’ menu merchandise as acceptable.
If changing the WCM, the spare tire have to be dismounted from its wheel to entry and observe the spare tire stress sensor ID. Then observe the programming steps outlined within the diagnostic scan software for ‘Learn Spare Tire Sensor ID’ beneath ‘Miscellaneous Functions’ for the ‘WCM/Wireless Control Module’ menu merchandise as acceptable. In addition, the placard stress thresholds have to be up to date within the new WCM. Go to “Update Pressure Thresholds” beneath “Miscellaneous Functions” for the “WCM Wireless Control Module” and observe the process.
Transponder
Transponders situated in three of the 4 wheel wells of the car to supply the Wireless Control Module (WCM) situated within the Sentry Key Remote Entry Module (SRKEEM) with the placement of the tire stress sensors on the car. The transponders are situated within the left entrance, proper entrance and proper rear wheel wells. A fourth transponder will not be vital within the remaining wheel nicely as a result of process-of-elimination principle. Once the system is aware of the placement of the primary three sensors it assumes the placement of the fourth tire stress sensor is within the left rear tire.
Notes and cautions
NOTE 1: It is especially essential, so that you can verify the tire stress in your entire tires repeatedly and to take care of the correct stress.
NOTE 2: For autos with non-obligatory wheel/tire sizes and considerably completely different tire placard pressures, the placard stress worth and the low-pressure threshold worth is re-programmable at your approved vendor to accommodate the shopper chosen wheel/tire combos beneficial by DaimlerChrysler Corporation.
NOTE 3:
- The TPM system can inform the motive force of a low tire stress situation.
- The TPM system will not be supposed to exchange regular tire care and upkeep, nor to supply warning of a tire failure or situation.
- The TPM system shouldn’t be used as a tire stress gauge whereas adjusting your tire stress.
| CAUTION! The TPM system has been optimized for the unique gear tires and wheels. TPM system pressures have been established for the tire measurement outfitted in your car. Undesirable system operation or sensor harm could consequence when utilizing substitute gear that isn’t of the identical measurement, kind, and/or type. After-market wheels could cause sensor harm. Do not use tire sealant from a can, or steadiness beads in case your car is provided with a TPM system, as harm to the sensors could consequence.CAUTION! After inspecting or adjusting the tire stress all the time reinstall the valve stem cap. This will forestall moisture and filth from getting into the valve stem, which might harm the wheel rim sensor. |
The “Tire Pressure Monitoring Indicator Lamp” will illuminate within the instrument cluster, and an audible chime will likely be activated when a number of tire pressures is low. The “Tire Pressure Monitoring Indicator Lamp” will flash on and off for ten seconds when a system fault is detected. The flash cycle will repeat each ten minutes or till the fault situation is eliminated and reset.
The Premium Tire Pressure Monitoring System consists of the next parts:
- Receiver Module
- 4 (or 5*) Wheel Sensors
- 3 Wheel Sensor Trigger Modules
- Tire Pressure Monitoring System Display Messages within the EVIC
- Amber Colored Tire Pressure Monitoring Indicator Lamp
*A sensor is put in within the spare wheel if the car is provided with an identical full measurement spare wheel and tire meeting.
Premium system operation
The tire stress monitoring system is designed to function with out lack of perform for all sorts of normal tire constructions. (Function with several types of run flat tire constructions must be evaluated for every design). The wheel sensor shall monitor tire stress, air temperature contained in the tire, wheel acceleration and the sensor inside battery standing for all 4 lively street tires and the spare tire, in that case outfitted. The sensor will broadcast this data, together with a novel 32 bit ID, to a central receiver circuit situated contained in the WCM. The data obtained by the WCM will likely be decoded and saved in (RAM) reminiscence within the WCM. The WCM will ship bus messages to the re-configurable show module to show the pressures of the 4 lively street tires in car place. The spare tire stress is monitored however it’s not displayed.
If a “warning” or “fault” situation exists, the WCM will ship a bus message request to show the textual content messages and, when required, illuminate the amber coloured ISO Indicator Lamp. “Warnings” and “faults” are described in additional element under. If the WCM detects a warning or fault situation at ignition key “on” it’s going to wait ten seconds +/- 10% earlier than sending the primary request to light up the Indicator Lamp and to show the textual content messages. This will guarantee that the show module has concluded its bulb verify interval. The show module will request a chime as soon as per ignition cycle for every “warning” or “fault” situation detected. A “warning” or “fault” situation will stay enabled till the issue inflicting the situation is corrected and eliminated/reset.
The WCM shall repeatedly monitor for the receipt of tire stress RF message transmissions from the wheel sensors throughout each the ignition key “on” and key “off” cycles. The wheel sensor ID’s and the placement of every sensor (e.g. Left Front, Right Front and so forth.) are saved within the WCM non-volatile reminiscence throughout the preliminary Manufacturing Plant Process, or throughout a service process, as required. The beneficial “placard stress”, “low-pressure threshold” and Hysteresis Pressure Values for the tires put in on the car, are saved within the WCM non-volatile reminiscence throughout the preliminary Manufacturing Plant Process, as described later on this doc or throughout a service process as required.
The TPM System will proceed to warn the motive force of low tire stress so long as the situation exists, and won’t flip off the indicator lamp till the tire stress is at or above the Low Pressure (lamp) OFF threshold (see placard desk under). The system will routinely replace and the TPM warning lamp will extinguish as soon as the up to date tire pressures have been obtained.
The tire stress will fluctuate with temperature by about 1 psi (6.9 kPa) for each 12°F (6.5°C). This signifies that when the skin temperature decreases, the tire stress will lower. Tire stress ought to all the time be set primarily based on chilly inflation tire stress (placard stress). This is outlined because the tire stress after a car has not been pushed for greater than 3 hours – and in outdoors ambient temperature. The tire stress will even improve because the car is pushed – that is regular and there ought to be no adjustment for this elevated stress. For a system fault, the system will return to regular as soon as the WCM receives a sound transmission from that sensor location.
Premium system monitoring
The operation and lamp/chime technique for a premium tire stress monitoring system (TPMS) is similar as the bottom TPMS, however the premium TPMS can show textual content messages and a graphic show of the tire stress on the knowledge cluster. If a low stress situation is detected, along with a chime and the indicator lamp turning ON, a low stress textual content message indicating which tire is low will likely be displayed within the instrument cluster for 3 seconds. This textual content message will likely be adopted by a graphic show of the stress worth(s) with the low tire(s) flashing. Once stress within the suspect tire raises above the Low Pressure (lamp) OFF Threshold, the lamp will exit and the system returns to regular inside roughly two minutes time. If a system fault is detected, along with the flashing lamp, a “Service Tire Press.System” textual content message will likely be displayed within the instrument cluster, and the graphic show may have “- -” rather than the stress worth. The system will return to regular as soon as the WCM receives a sound transmission from that sensor location.
A Premium Tire Pressure Monitoring System (TPMS) determines the placement of the tire stress sensors by utilizing transponders situated in three of the 4 wheel wells on the car. A fourth transponder will not be vital within the remaining wheel nicely as a result of strategy of elimination principle. Once the system is aware of the placement of the primary three sensors, it assumes the placement of the fourth tire stress sensor, and replace the graphic show when vital.
For each the premium and base TPMS, the beneficial “Placard Pressure”, “Low-pressure Threshold” and “Hysteresis Pressure Values” for the tires put in on the car, are saved within the WCM non-volatile reminiscence throughout the preliminary Manufacturing Plant Process, or throughout a service process, as required. To decide the stress thresholds for a car, discuss with the Tire Inflation Pressure (Placard) Label, after which apply the placard stress to the next desk. The Low Pressure OFF Threshold is outlined because the Low Pressure ON Threshold plus the Hysteresis Pressure Value.
Sensor studying mode
Each sensor’s (transmitter) broadcast is uniquely coded in order that the wi-fi management module (WCM) can monitor the state of every of the sensors on the 4 rotating street wheels. The WCM can routinely be taught and retailer the sensor’s ID whereas driving inside 10 minutes repeatedly above 15 m.p.h. (24 Km/h) after a sensor has been changed, the car have to be stationary for greater than 20 minutes as a way to provoke the educational sequence.
Spare tire sensor programming
On autos outfitted with a Tire Pressure Monitoring System (TPMS), when the spare tire stress sensor is changed with a brand new stress sensor, a diagnostic scan software MUST be used to run a routine that can program the brand new stress sensor ID into the Wireless Control Module (WCM), generally known as the Sentry Key Remote Entry Module (SKREEM). Please copy the ID quantity off of the brand new stress sensor earlier than putting in it into the spare tire. Then observe the programming steps outlined within the diagnostic scan software for: “Learn Spare Tire Sensor ID” beneath “Miscellaneous Functions” for the “WCM/Wireless Control Module” menu merchandise as acceptable.
If changing the WCM, the spare tire have to be dismounted from its wheel to entry and observe the spare tire stress sensor ID. Then observe the programming steps outlined within the diagnostic scan software for “Learn Spare Tire Sensor ID” beneath “Miscellaneous Functions” for the “WCM/Wireless Control Module” menu merchandise as acceptable. In addition, the placard stress thresholds have to be up to date within the new WCM. Go to “Update Pressure Thresholds” beneath “Miscellaneous Functions” for the “WCM Wireless Control Module” and observe the process.
Transponder
Transponders situated in three of the 4 wheel wells of the car to supply the Wireless Control Module (WCM) situated within the Sentry Key Remote Entry Module (SRKEEM) with the placement of the tire stress sensors on the car. The transponders are situated within the left entrance, proper entrance and proper rear wheel wells. A fourth transponder will not be vital within the remaining wheel nicely as a result of process-of-elimination principle. Once the system is aware of the placement of the primary three sensors it assumes the placement of the fourth tire stress sensor is within the left rear tire.
Notes and cautions
NOTE 1: For autos with non-obligatory wheel/tire sizes and considerably completely different tire placard pressures, the placard stress worth and the low-pressure threshold worth is re-programmable at your approved vendor to accommodate the shopper chosen wheel/tire combos beneficial by DaimlerChrysler Corporation.
NOTE 2: It is especially essential, so that you can verify the tire stress in your entire tires repeatedly and to take care of the correct stress.
NOTE 3:
- The TPM system can inform the motive force of a low tire stress situation.
- The TPM system will not be supposed to exchange regular tire care and upkeep, nor to supply warning of a tire failure or situation.
- The TPM system shouldn’t be used as a tire stress gauge whereas adjusting your tire stress.
Warning messages
Tire Pressure Monitor System “warnings” will trigger a textual content message to be displayed, an audible chime to sound and the “Tire Pressure Indicator Lamp” to light up. The audible chime will happen as soon as each ignition cycle for every “warning” detected. The “Tire Pressure Indicator Lamp” will illuminate repeatedly (stable) and shall stay illuminated till the warning situation is eliminated/ reset.
NOTE: The Indicator Lamp will solely illuminate for the 4 lively street tires. A low spare tire stress won’t trigger the Indicator Lamp to light up.
When the suitable situations exist, the Electronic Vehicle Information Center (EVIC) shows the next messages:
“LEFT FRONT”, “LEFT REAR”, “RIGHT FRONT”, “RIGHT REAR”, “SPARE LOW PRESSURE”
One or extra of those messages will likely be displayed within the EVIC if a low tire stress situation exists in a number of tires. Inspect all tires for correct inflation stress, as soon as the correct tire stress has been set, the TPM system warning will reset routinely when the car has been pushed for no less than 2 minutes at or above 15 mph (24 km/h).
“CHECK TPM SYSTEM” / “Service Tire Press.System”
See your approved vendor when this message seems within the EVIC. This message signifies {that a} system fault situation has been detected.
| CAUTION! The TPM system has been optimized for the unique gear tires and wheels. TPM system pressures have been established for the tire measurement outfitted in your car. Undesirable system operation or sensor harm could consequence when utilizing substitute gear that isn’t of the identical measurement, kind, and/or type. After-market wheels could cause sensor harm. Do not use tire sealant from a can, or steadiness beads in case your car is provided with a TPM system, as harm to the sensors could consequence.CAUTION! After inspecting or adjusting the tire stress all the time reinstall the valve stem cap. This will forestall moisture and filth from getting into the valve stem, which might harm the wheel rim sensor. |
| TPM THRESHOLD PRESSURES | ||
| Placard Pressure (Cold) (PSI) | Low Pressure ON Threshold (PSI) | Low Pressure OFF Threshold (PSI) |
| 28 | 22 | 26 |
| 29 | 23 | 27 |
| 30 | 24 | 28 |
| 31 | 25 | 29 |
| 32 | 25 | 29 |
| 33 | 26 | 30 |
| 34 | 27 | 31 |
| 35 | 28 | 32 |
| 36 | 29 | 33 |
| 37 | 29 | 34 |
| 38 | 30 | 35 |
| 39 | 31 | 36 |
| 40 | 32 | 37 |
| 41 | 33 | 38 |
| 42 | 34 | 39 |
| 43 | 35 | 40 |
| 44 | 36 | 41 |
| 45 | 37 | 42 |
| 46 | 38 | 43 |
| 47 | 39 | 44 |
| 48 | 40 | 45 |
| 49 | 41 | 46 |
| 50 | 42 | 47 |
| 51 | 43 | 48 |
| 55 | 47 | 52 |
| 60 | 52 | 57 |
| 65 | 57 | 62 |
| 70 | 62 | 67 |
| 75 | 67 | 72 |
| 80 | 72 | 77 |