2022-2024 Jeep Compass BCM Water Intrusion TSB

Symptoms of BCM Water Intrusion

Owners of 2022-2024 Jeep Compass vehicles equipped with the 2.0L I4 DOHC DI Turbo Engine with ESS (Sales Code EC1) may experience a range of electrical issues due to water intrusion into the Body Control Module (BCM). The most prominent symptom is the illumination of the Malfunction Indicator Lamp (MIL).

Beyond the MIL, customers might observe that their rear windshield wipers continue to operate even after the switch is turned to the OFF position. Other indicators of this problem include the Electronic Vehicle Information Center (EVIC) flashing, or the front windows failing to operate correctly. These symptoms collectively point towards the Jeep Compass BCM water intrusion issue.

Associated Fault Codes (DTCs)

When diagnosing the Jeep Compass BCM water intrusion problem, technicians are likely to find one or more of the following Diagnostic Trouble Codes (DTCs) stored in the vehicle's system:

Code	Description
U1046-00	LIN 4 Bus.
U0140-00	Lost Communication With Body Control Module.
U121E-00	Lost Communication With Steering Wheel Cruise Control Switch.

These codes indicate communication failures or issues related to the BCM, which is consistent with water damage.

Diagnosis and Trigger Conditions

Diagnosis for this issue involves using a wiTECH scan tool to check for the specified DTCs and verify the proper function of all related systems. If symptoms such as continuous rear wiper operation or MIL illumination are present, the repair procedure outlined in TSB 08-219-24 should be followed. It's important to address any other existing DTCs or system malfunctions before proceeding with the BCM inspection and repair.

Repair Procedure Summary

The repair outlined in TSB 08-219-24, identified as J08 FSAR-TSB-4357, focuses on addressing the Jeep Compass BCM water intrusion and preventing future occurrences. The process involves several key steps:

1. BCM Inspection: The Body Control Module and its surrounding area are inspected for any signs of water intrusion.
2. BCM Replacement (If Needed): If water damage to the BCM is confirmed, the module is replaced. Specific part numbers for the BCM vary by model year: 68628388AA for 2022, 68628390AD for 2023, and 68634788AD for 2024.
3. Washer Hose Rerouting: A critical part of the repair is replacing and rerouting the windshield washer hose assembly to prevent future water intrusion. This involves:
   • Removing the cowl panel cover, headlamp close-out panel, instrument panel end cap, and left A-pillar trim panel.
   • Disconnecting the existing washer hose from various points, including the Power Distribution Center (PDC) support, windshield washer reservoir, and rear windshield inline wiper hose coupler.
   • Cutting the damaged hose and using it as a guide to route the new washer hose (part number 68365715AA) through the grommet and instrument panel to the A-pillar.
   • Securing the new hose with clips and new tie-down straps (part number 06106188AA).
   • Connecting the new hose to the rear windshield wiper inline hose and the windshield washer reservoir.
   • Reinstalling all removed panels and trim.
4. DTC Clearance: After the physical repairs are complete, all stored Diagnostic Trouble Codes are cleared from the vehicle's system.

This comprehensive procedure aims to resolve the current electrical issues and safeguard the BCM from future water damage.

Required Tools and Parts

To perform the repair described in TSB 08-219-24, technicians will need:

• wiTECH or Equivalent: A diagnostic scan tool for checking DTCs and verifying system functionality.
• Body Control Module (BCM):
  • Part No. 68628388AA (for 2022 Model Year)
  • Part No. 68628390AD (for 2023 Model Year)
  • Part No. 68634788AD (for 2024 Model Year)
• Hose, Windshield Washer: Part No. 68365715AA
• Clip, Wiring: Part No. 06106188AA (Quantity 3)

These parts are essential for replacing the potentially damaged BCM and rerouting the washer hose assembly to prevent recurrence of the Jeep Compass BCM water intrusion.

Owner Action

If you own a 2022-2024 Jeep Compass and are experiencing symptoms such as continuous rear windshield wiper operation, a lit Malfunction Indicator Lamp (MIL), a flashing Electronic Vehicle Information Center (EVIC), inoperable front windows, or any of the DTCs U1046-00, U0140-00, or U121E-00, it is recommended to schedule an appointment with your authorized Jeep dealer. Referencing TSB 08-219-24 can help expedite the diagnostic and repair process. This repair is reimbursable under warranty provisions.

---

Source: NHTSA ID: 11008752