Flash: Body Control Module (BCM) Updates
This bulletin involves reprogramming the BCM with the latest available software.
Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find the following Diagnostic Trouble Codes (DTCs) have been set:P1515-00 - Plausibility Check R1 Stuck Closed Or Vsensing Short To Battery In Engine Running(2019 M6 within the RRT build date only). B25C9 - Driver Door Ajar Switch 2 Stuck Closed (Module, Powertrain Control (PCM)). Stored DTC only, this update is not for active fault.If B25C9 is an active fault normal diagnostic must be performed. This software update will not correct active DTC. P26E4-64 - Starter Control 2 Circuit-Signal Plausibility Failure.
In addition, customers or technicians may comment on one or more of the following:No start condition if the vehicle has both P1515-00 and P26E4-64 DTCs(2019 M6 within the RRT build date only). Park assist LED does not turn on(2019-20 MP/M1 and 2019 M6 only). The key fob does not work for power lift gate (sales code JRC)(2019-20 MP/M1 and 2019 M6 only). Vehicle Theft Alarm (VTA) sounding after remote start time out(2019-20 MP/M1 and 2019 M6 only). VTA triggers randomly. The vehicle will not restart when in Engine Stop/Start (ESS) mode. Customers will have to shift into park and cycle the ignition to get the vehicle to start again. The vehicle cranks but fails to start, the customer will have a message on the Instrument Panel Cluster (IPC) "press brake and push ignition button to start" after this happens they must perform a key cycle function with their foot off the brake, then the vehicle will restart normally. Automatic rain sensing wipers inoperative when the vehicle is restarting from Stop&Start event the wipers may not restart.
Switching the wipers to off then back to on again will resume operation. VTA is enabled in ?Ship Mode?.
