2022-2025 Stellantis Remote Start & TPMS Faults TSB S2208000138

Stellantis has issued Technical Service Bulletin (TSB) S2208000138 Rev. B to address concerns regarding decreased remote start and Remote Keyless Entry (RKE) range, as well as situations where tire pressure sensor values are not displayed in various 2022-2025 Stellantis vehicles. This bulletin provides diagnostic steps and potential solutions for these problems, including identifying specific diagnostic trouble codes (DTCs) and the impact of aftermarket accessories.

Symptoms

Owners may experience a noticeable decrease in the effective range of their remote start and RKE systems. Additionally, the vehicle's instrument cluster might display dashes instead of actual tire pressure sensor values, indicating a failure to receive or display Tire Pressure Monitoring System (TPMS) data. These symptoms are collectively referred to as "Decreased Remote Start And RKE Range" and "Tire Pressure Sensors Values Are Not Displayed" in the bulletin.

Fault Codes / DTCs

When scanning the vehicle for diagnostic trouble codes, technicians may find one or more of the following:

• B1A76-13: Remote start antenna DTC
• C1501-31: TPMS DTC
• C1502-31: TPMS DTC
• C1503-31: TPMS DTC
• C1504-31: TPMS DTC
• C151D-00: TPMS DTC

These codes indicate issues related to the remote start antenna or the tire pressure monitoring system.

Diagnosis and Trigger Conditions

A primary cause for these issues can be a failed remote start antenna. This can lead to problems with multiple tire pressure sensors. The bulletin identifies specific sensor locations that are most susceptible based on vehicle platform:

• DT: Rear TPM sensors
• JL/JT: Front TPM sensors
• KL: Front TPM sensors
• LA, LD, LX: Front TPM sensors
• MP: Front TPM sensors
• RU: Front TPM sensors
• VF: Rear TPM sensors
• WD/WK: Front TPM sensors
• WL/WS: Front TPM sensors

Beyond a faulty antenna, aftermarket components can also significantly impact RKE and TPMS performance. These include aftermarket TPM sensors that do not meet Mopar factory standards, aftermarket alarm and GPS systems that interfere with Radio Frequency (RF) signals, and even certain types of window tint, particularly ceramic tint, which can block RF signal transmission.

Repair Procedure Summary

The diagnostic and repair process outlined in TSB S2208000138 Rev. B focuses on verifying the remote start antenna and addressing potential interference:

1. Antenna Connection Check: Ensure the remote start antenna connector is properly seated at the RF hub, and inspect the connector pins for any damage.
2. Coax Cable Inspection: Visually check the remote start antenna (RSA) coax cable for any physical damage.
3. DTC Monitoring: Wiggle the coax cable while monitoring if any associated DTCs become active or stored.
4. Module Reset: Disconnect and reconnect the Remote Start Antenna cable at the RF Hub Module.
5. Known Good Antenna Test: Connect a known good RSA directly to the RF Hub and observe if the RKE range or TPMS issues resolve. This helps isolate the problem to the antenna itself.
6. Further Investigation: If issues persist after these steps, further investigation into the key fobs, RFH (Radio Frequency Hub), and TPMS is recommended.
7. Antenna Replacement: If no connection issues are found and normal operation returns with a known good remote start antenna, the original remote start antenna should be replaced.

Additionally, the bulletin advises removing any aftermarket components that may be interfering with RKE and TPMS signals. After any repairs or component removals, technicians should verify that normal RKE range and TPMS values are restored.

Important Note for Technicians

This document serves as a record of past experiences and does not authorize warranty repairs. It does not provide definitive conclusions about vehicle issues but rather captures similar cases. Technicians are responsible for determining the appropriate course of action based on their expertise.

NHTSA ID: 11020600