The Tire Pressure Monitoring System (TPMS) is a crucial safety feature in modern vehicles, including the 2011-2015 Chrysler/Jeep Wrangler models. This system alerts drivers to low tire pressure, which can improve vehicle safety, handling, and fuel efficiency. For automotive technicians and DIY enthusiasts working on these vehicles, understanding the TPMS reset and relearn procedures, especially when using tools like the TPM-RKE analyzer 9936 with the scan tool, is essential.
This article provides a comprehensive guide to the TPMS system in 2011-2015 Jeep Wranglers, focusing on reset and relearn procedures and the role of the TPM-RKE analyzer 9936 with the scan tool.
Understanding the TPMS in 2011-2015 Jeep Wranglers
The TPMS in these Wrangler models consists of several key components working together to monitor tire pressure:
- Tire Pressure Sensors: Located inside each wheel (including the spare if equipped with a full-size spare), these sensors measure tire pressure and temperature and transmit this data wirelessly.
- Wireless Control Module (WCM): This module receives signals from the tire pressure sensors. In non-remote start vehicles, the WCM integrates the TPMS receiver. For models with factory remote start, the remote start antenna is external to the WCM. The WCM may also incorporate the Remote Keyless Entry (RKE) receiver, remote start functionalities, and the Sentry Key Immobilizer (SKIM) receiver.
- TPMS Indicator Lamp: A yellow telltale lamp on the dashboard alerts the driver to TPMS issues.
The WCM is responsible for decoding the radio frequency (RF) signals from each tire pressure sensor. This decoded information is then analyzed to detect any “warning” or “fault” conditions within the TPMS.
TPMS Warning Indicators: Recognizing System Alerts
The TPMS indicator lamp serves as the primary communication tool to alert drivers about tire pressure issues or system malfunctions. There are two main types of warnings:
- Low Tire Pressure Warning: If the TPMS detects that the tire pressure in any of the road tires falls below the specified low pressure threshold, the indicator lamp will illuminate continuously. This indicates that one or more tires need inflation.
- System Fault Warning: If the TPMS detects a malfunction within the system itself, such as a sensor failure or communication issue, the indicator lamp will flash on and off for 75 seconds and then remain continuously lit. This signals a need for system diagnosis and repair.
Once a low tire pressure warning is activated, it’s crucial to inflate the tires to the recommended cold placard pressure. After inflation, the TPMS warning lamp should automatically turn off. The system updates in real-time, and the light will extinguish once the updated tire pressures are received. It may be necessary to drive the vehicle for up to 10 minutes above 15 mph (25 km/h) for the system to register the pressure changes.
Alt text: A close-up view of a tire pressure sensor, highlighting its components and valve stem attachment point, relevant to TPMS systems in Jeep Wranglers.
TPMS Reset Procedures: Addressing Warning Lights
When the TPMS warning light illuminates due to low tire pressure, the initial reset procedure is straightforward:
- Inflate Tires: Inflate all tires, including the spare if applicable, to the recommended cold placard pressure, typically found on a sticker inside the driver’s side doorjamb.
- Automatic System Update: Drive the vehicle for approximately 10 minutes at speeds above 15 mph (25 km/h). This allows the TPMS to receive and process the updated tire pressures.
- Warning Light Extinguishes: Once the system recognizes the correct tire pressures, the TPMS warning light should turn off automatically.
Tire Pressure Sensor Retraining: When Replacement is Necessary
If a tire pressure sensor is replaced, the system needs to be retrained to recognize the new sensor ID. Each sensor transmits a unique RF signal, and the TPMS module must learn this new ID to monitor the replaced sensor correctly. There are two methods for sensor retraining on 2011-2015 Jeep Wranglers:
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Automatic Relearn Procedure (Driving Method):
- Ensure the vehicle has been stationary for more than 20 minutes.
- Drive the vehicle continuously for at least 10 minutes while maintaining a speed above 15 mph (24 km/h).
- During this driving period, the TPMS module will automatically detect and learn the new sensor ID.
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TPM-RKE Analyzer 9936 with Scan Tool Method:
- Utilize the TPM-RKE Analyzer 9936 with the scan tool. This tool is specifically designed to communicate with the TPMS module.
- Follow the scan tool manufacturer’s instructions to access the TPMS relearn function.
- Use the TPM-RKE Analyzer 9936 to trigger each sensor, including the new sensor. The tool sends a signal to activate the sensor and force it to transmit its ID.
- The scan tool, connected to the vehicle’s diagnostic port, will then program the WCM/SKREEM (Sentry Key REmote Entry Module) with the new tire pressure sensor IDs. This method is faster and often more reliable than the automatic relearn, especially in situations where driving conditions are not easily met or when dealing with multiple sensor replacements.
Alt text: Image of the TPM-RKE Analyzer 9936 tool alongside a generic scan tool, emphasizing their combined use for TPMS diagnostics and sensor relearn procedures on vehicles like Jeep Wranglers.
Using the TPM-RKE Analyzer 9936 with the scan tool offers a more efficient and controlled way to perform TPMS sensor retraining. This is particularly beneficial in professional automotive service environments where time and accuracy are paramount. By using this tool, technicians can quickly and confidently ensure the TPMS system is correctly configured after sensor replacements or tire rotations.
Tire Demounting and Mounting Procedures: Avoiding Sensor Damage
When performing tire service on 2011-2015 Jeep Wranglers equipped with TPMS, it’s crucial to follow proper demounting and mounting procedures to prevent damage to the tire pressure sensors.
- Use Proper Equipment: Always use a tire changer and follow the tire changer manufacturer’s instructions.
- Avoid Aftermarket Sealants and Balance Beads: Do not use aftermarket tire sealants or balance beads if the vehicle is equipped with TPMS. These products can damage the sensors.
- Match Mounting: Note that wheels and tires are match-mounted at the factory. Before demounting, place a reference mark on the tire at the valve stem location to ensure it is remounted in the original position. Refer to the manufacturer’s service information for specific match-mounting procedures.
Cautionary Notes:
- The TPMS is designed and optimized for original equipment tires and wheels. Using replacement equipment of a different size, type, or style can lead to undesirable system operation or sensor damage. Aftermarket wheels can also pose a risk of sensor damage.
- Tire pressure may increase by 2 to 6 psi (14 to 41 kPa) during normal driving. Do not reduce this normal pressure buildup.
- If leak-testing tires with sensors, a water test is permissible around the sensor, provided any water at the valve core is removed afterward.
Conclusion: Ensuring Proper TPMS Functionality
Maintaining the TPMS system on 2011-2015 Jeep Wranglers is vital for vehicle safety and performance. Whether you are a professional technician or a DIY enthusiast, understanding the system’s operation, warning signs, and reset/retraining procedures is crucial. Utilizing specialized tools like the TPM-RKE analyzer 9936 with the scan tool can significantly streamline the process, especially when dealing with sensor replacements. By following the recommended procedures and taking necessary precautions during tire service, you can ensure the TPMS system functions correctly, keeping drivers informed and safe on the road.
