Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSMERCURY2009MILAN PREMIER, 3.0 1, AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1439 (ENGINE CONTROLS - POWERTRAIN DTC CHARTS & DESCRIPTIONS - (HYBRID))DTC DIAGNOSISU0129 (TCM) - LOST COMMUNICATION WITH BRAKE SYSTEM CONTROL MODULE
2009 Mercury Milan Premier, 3.0 1, AWD
U0129 (TCM) - Lost Communication With Brake System Control Module
2009 Mercury Milan Premier, 3.0 1, AWDSECTION U0129 (TCM) - Lost Communication With Brake System Control Module
WARNING: This page is about a different car, the 2010 Mercury Mariner and 2010 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.
U0129 (TCM) - LOST COMMUNICATION WITH BRAKE SYSTEM CONTROL MODULE
| Description: | The transaxle control module (TCM) continuously monitors the controller area network (CAN) for messages from the anti-lock brake system (ABS) module. This DTC sets when the TCM does not receive the ABS message within the defined amount of time. | ||
| Possible Causes: |
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| Diagnostic Aids: | Check for other TCM DTCs or TCM related symptoms. Diagnose all other TCM DTCs or TCM related symptoms first. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to PINPOINT TEST QA . | ||
RENDER: 1.0x
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.