Vehicle: 2014 BMW X1 xDrive 28i, AWD (E84), L4-2.0L Turbo (N20), Automatic Transmission/Transaxle

Mileage: 136,552

Problem: This BMW X1 was in the shop because the shift lever returned to PARK whenever it was shifted into another position, the brake lights were staying on (except for the high mounted center light), and all the power windows were inoperative.

Case Details: The technician connected a scan tool and retrieved the following diagnostic trouble codes (DTCs) from the footwell module (FRM).

• CDBA - No message (status of pull sensors secured BN2000, 0x1E1), DME receiver, FRM transmitter
• CD95 - No message (lamp condition, 0x21A), DME receiver, FRM transmitter
• CF65 - Message (secured status of door sensors BN2000, 1E1h) for (EGS_EL, PT-CAN) from (FRMFA, PT-CAN)
• A3B4 - No message (lamp condition, 0x21A), receiver instrument panel, transmitter FRM

The DTCs were a little confusing so the technician made a quick call to ALLDATA Tech-Assist for a little help. The consultant advised the technician to check communication with the FRM first. If he could not communicate with the FRM, the next items to check were the wiring and the connector at the module. This model BMW is known to have issues with corrosion there.

The technician found the FRM was not communicating with the scan tool. A thorough inspection of the wiring and connectors revealed that there were no signs of corrosion, and the power and grounds to the module were good. The conclusion drawn from the testing was to replace the FRM.

Confirmed Repair:  After installing a used FRM with the same part number and clearing all the DTCs, the issue was resolved. NOTE: Reprogramming of the module was not required in this case. Fixed!