The Tire Pressure Monitoring System (TPMS) in the 2005-2008 Chrysler Crossfire relies on sensors within each tire’s valve stem to transmit pressure data to the TPMS module. This system alerts the driver to low tire pressure via a dashboard warning light. Servicing this system often requires a Chrysler DRB-III scan tool and a Relearn Magnet (8821), especially when replacing sensors or performing tire rotations.
Understanding the Chrysler Crossfire TPMS
The TPMS module, located near the rearview mirror, continuously monitors tire pressure when the ignition is on. While the system indicates low pressure, it doesn’t pinpoint the affected tire. Each sensor contains a roll switch activated at 20 mph, using the valve stem as an antenna to transmit pressure data to the module.
Sensor Removal and Installation: Crucial Steps
Removing a sensor involves careful steps to avoid damage. First, remove the tire and wheel assembly, then deflate the tire completely. Critically, the sensor must be removed from the wheel and placed inside the tire before demounting to prevent damage. After breaking the tire bead, the sensor can be retrieved from within the tire.
Installing a new sensor requires replacing the sealing grommet and ensuring a clean, undamaged seating surface. The sensor nut should be tightened to 35 in-lbs (4 N.m) while preventing sensor rotation. After mounting the tire and inflating it to the correct pressure, the sensor’s ID code must be registered with the TPMS module using the Chrysler DRB-III scan tool. Finally, verify functionality by driving at 25 mph for two minutes while monitoring the scan tool.
Example of a TPMS sensor installed on a wheel.
TPMS Relearning with the DRB-III and Relearn Magnet 8821
Whenever a tire is changed, rotated, or a sensor/TPMS module is replaced, the system must relearn the sensor IDs. This process mandates the use of a Chrysler DRB-III scan tool and the specialized Relearn Magnet 8821. Warning: The Relearn Magnet is powerful and should be kept away from magnetically sensitive devices like pacemakers.
The relearning procedure involves connecting the DRB-III to the vehicle’s Data Link Connector and accessing the “Train All Mode” function within the “Chassis System” menu. The Relearn Magnet (8821) is then placed over each valve stem sequentially, starting with the left front tire, following the DRB-III prompts. The tool will beep, indicating successful programming for each sensor, and guide you to the next wheel. After the last tire (left rear), the DRB-III will confirm completion. Verify the programming by checking the “Input/Output Display” and “Sensor Display” on the DRB-III for accurate pressure readings.
The Chrysler DRB-III scan tool is essential for TPMS relearning.
Ensuring Accurate TPMS Function
Proper TPMS function is crucial for safety and optimal tire performance. Utilizing the Chrysler DRB-III scan tool and the Relearn Magnet 8821 ensures accurate sensor registration and system functionality after service. Always consult the vehicle’s service manual for specific instructions and safety precautions. Regular TPMS maintenance contributes to improved fuel economy, tire longevity, and overall vehicle safety.
