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 MANUALSMERCURY2010MARINER HYBRID, AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1216 (ANTI-LOCK BRAKE SYSTEM - VEHICLE DYNAMIC SYSTEMS)DIAGNOSIS AND TESTINGANTI-LOCK CONTROL - NON-HYBRIDSYMPTOM TABLE

2010 Mercury Mariner Hybrid, AWD

Symptom Table

2010 Mercury Mariner Hybrid, AWDSECTION Symptom Table

WARNING: This page is about a different car, the 2010 Mercury Milan, 2010 Lincoln MKZ, and 2010 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.

SYMPTOM TABLE

Condition	Possible Sources	Action
No communication with the ABS module	Fuse Wiring, terminals or connectors ABS module	REFER to MODULE COMMUNICATIONS NETWORK to diagnose the no communication problem.
The yellow ABS warning indicator, the sliding-car icon and the red brake warning indicator are all illuminated at the same time	DTCs present in the ABS module No communication between the ABS module and the Instrument Panel Cluster (IPC)	RETRIEVE and RECORD the ABS module DTCs. GO to ABS MODULE DTC TABLE .
Both the yellow ABS warning indicator and the sliding-car icon are illuminated at the same time	DTCs present in the ABS module ABS module not configured Vehicle Identification Number (VIN) mismatch between ABS module and PCM For All-Wheel Drive (AWD) vehicles, no communication between the ABS module and the Restraints Control Module (RCM)	RETRIEVE and RECORD the ABS module DTCs. GO to ABS MODULE DTC TABLE .
Only the red brake warning indicator is always/never on	DTCs present in the ABS module Wiring, terminals or connectors Brake fluid level switch Parking brake switch Optimized hydraulic braking activation	RETRIEVE and RECORD any ABS module DTCs. GO to ABS MODULE DTC TABLE . If no DTCs are present, REFER to DIAGNOSIS AND TESTING .
Only the yellow ABS warning indicator is always/never on	DTCs present in the ABS module Wiring, terminals or connectors IPC ABS module	RETRIEVE and RECORD any ABS module DTCs. GO to ABS MODULE DTC TABLE . If no DTCs are present, REFER to DIAGNOSIS AND TESTING .
Only the sliding-car icon is always on	DTCs present in the ABS module For Front Wheel Drive (FWD) vehicles, no communication between the ABS module and the RCM For AWD vehicles, no communication between the ABS module and the 4X4 control module	RETRIEVE and RECORD any ABS module DTCs. GO to ABS MODULE DTC TABLE .
The sliding-car icon is never on	Wiring, terminals or connectors IPC ABS module	REFER to DIAGNOSIS AND TESTING .
The sliding-car icon flashes	AdvanceTrac® system	The sliding-car icon will flash 2 times per second during a traction control or stability event. This is a normal function and does not indicate any concerns.
The sliding-car OFF icon is never/always on	Wiring, terminals or connectors IPC Stability/traction control switch	REFER to DIAGNOSIS AND TESTING .
Spongy brake pedal with no warning indicator	Air in the brake hydraulic system	INSPECT the brake pedal and bracket for damage or incorrect installation. REPAIR or INSTALL new as necessary. If the brake pedal and bracket are OK, BLEED the brake system and Hydraulic Control Unit (HCU). REFER to BRAKE SYSTEM BLEEDING .
Poor vehicle tracking during anti-lock function	Air in the hydraulic brake system HCU	Go To PINPOINT TEST L .
-	Base brake system	REFER to BRAKE SYSTEM - GENERAL INFORMATION .
-	Incorrect or worn tires Underinflated tire(s)	INSPECT the wheels and tires, front and rear suspension and the wheel speed sensor tone rings. REPAIR or INSTALL new as necessary.
Unintended ABS activation at low speeds or near the end of stopping the vehicle with no DTCs present	Incorrect or worn tires Underinflated tire(s) Suspension components Missing, damaged or misaligned wheel speed sensor tone rings	INSPECT the wheels and tires, front and rear suspension and the wheel speed sensor tone rings. REPAIR or INSTALL new as necessary.
The stability/traction control system is inoperative	System is turned off	VERIFY that the system is turned on.
-	DTCs present in the ABS module	CARRY OUT the ABS module self-test. RETRIEVE and RECORD any DTCs. REFER to ABS MODULE DTC TABLE .
-	High Speed Controller Area Network (HS-CAN) bus	REFER to MODULE COMMUNICATIONS NETWORK to diagnose the no communication problem.
The stability/traction control system cannot be disabled	Wiring, terminals or connectors Traction control switch IPC	Go To PINPOINT TEST M .

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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.