2020-2023 Ford Mustang Brake Fluid Safety Recall
Recall Reference Number: 23C35
Ford Motor Company has determined that there is a safety compliance defect with certain model-year 2020–2023 Mustang vehicles and has issued a recall. The Body Control Module (BCM) has an incorrect configuration. The incorrect configuration parameter prevents performance of the brake fluid sensor diagnostics. Therefore, the “low brake fluid” warning light may not come on when the brake fluid falls below the recommended level. Owners will be notified by Ford by mail and instructed to take their vehicle to a Ford Dealer to have the BCM reconfigured to properly illuminate the brake fluid warning indicator when the master cylinder reservoir is low.
If you have had your Mustang tuned or supercharged by us, this wont affect your tune, as we have to reprogram the PCM (Powertrain Control Module), not the BCM, for the tune.
When you take your Mustang to Ford, request that they don't reprogram or preform an as-built on the PCM. This recall does not require the PCM to be reprogrammed.
If preforming the recall on a 2021+ Mustang using the FDRS software, at step 9, the instructions require the technician to do a PCM relearn procedure, this does not REPROGRAM the PCM and does not effect the calibration, proceed with the rest of the steps.
This is a safety recall, so please go to your local Ford dealer and get the recall corrected.
Technical note: Reprogram will wipe existing data and do a fresh install, Re-learn syncs all the control modules back together and doesn't wipe any data.