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.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSMERCURY2010MARINER HYBRID, AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 865 (ENGINE CONTROLS - POWERTRAIN DTC CHARTS AND DESCRIPTIONS - (HYBRID))DTC DIAGNOSISU0129 (PCM) - LOST COMMUNICATIONS WITH BRAKE SYSTEM CONTROL MODULE
2010 Mercury Mariner Hybrid, AWD
U0129 (Pcm) - Lost Communications With Brake System Control Module
2010 Mercury Mariner Hybrid, AWDSECTION U0129 (Pcm) - Lost Communications With Brake System Control Module
WARNING: This page is about a different car, the 2007 Mercury Mariner and 2007 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.
U0129 (PCM) - LOST COMMUNICATIONS WITH BRAKE SYSTEM CONTROL MODULE
| Description: | The powertrain control module (PCM) continuously monitors controller area network (CAN) for messages from the ABS. This DTC is set when the PCM does not receive the anti-lock brake system (ABS) message within the defined amount of time. When this DTC is set the regenerative braking is disabled until the next driving cycle. | |||
| Possible Causes: | See the possible causes for DTC U0073. | |||
| Diagnostic Aids: | See the diagnostic aids for DTC U0001. | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory | |
| All | Refer to MODULE COMMUNICATIONS NETWORK . | |||
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
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.