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2008 Mercury Mariner Hybrid – No Crank With Multiple Hybrid Codes
CUSTOMER CONCERN Customer states the engine will not crank and numerous hybrid-system DTCs are stored. CAUSE The DTCs were shutdown effects from an electronics overheat condition, and testing confirmed the Motor Electronics Cooling System pump failed to circulate coolant. CORRECTION Remove and replace Motor Electronics Cooling System pump. Refill and bleed electronics cooling circuit, clear DTCs and verify pump operation.
2008 Mercury Mariner Hybrid – No Crank With No DTCs
CUSTOMER CONCERN Customer states the engine will not crank or start. No DTCs are stored and the theft indicator proves out normally. CAUSE Ignition-switch circuit testing confirmed the steering-column lock module was preventing the start command. CORRECTION Remove and replace steering-column lock module. Verify normal key operation and engine starting.
2008 Mercury Mariner Hybrid – Low Brake Pedal With C1525
CUSTOMER CONCERN Customer states the brake pedal is low after replacement of a failed front brake hose. DTC C1525 is stored. CAUSE Air remained trapped in the electronically controlled hydraulic brake system because the required hybrid service-bleed routine had not been completed. CORRECTION Perform complete hybrid ABS bleed procedure with a compatible scan tool and pressure bleeder. Clear DTC C1525 and verify brake-pedal height.
2008 Mercury Mariner Hybrid – Wrench Light With B1239
CUSTOMER CONCERN Customer states the wrench warning light comes on intermittently. DTC B1239 is stored in the battery-control system. CAUSE Testing under TSB 07-25-12 confirmed the traction-battery auxiliary mode-door actuator failed to control cooling-air flow. CORRECTION Remove and replace traction-battery auxiliary mode-door actuator. Clear DTC B1239 and verify battery-cooling airflow control.
2008 Mazda Tribute Hybrid – No Crank With No DTCs
CUSTOMER CONCERN Customer states the engine will not crank or start. No DTCs are stored and the theft indicator proves out normally. CAUSE Ignition-switch circuit testing confirmed the steering-column lock module was preventing the start command. CORRECTION Remove and replace steering-column lock module. Verify normal key operation and engine starting.
2008 Ford Escape Hybrid – Limp Mode With P0A7C P1A0D P1A0E P1A0F
CUSTOMER CONCERN Customer states the vehicle intermittently enters limp mode. DTCs P0A7C, P1A0D, P1A0E and P1A0F are stored. CAUSE The Motor Electronics Cooling System pump did not operate with the key on and failed direct power testing, confirming pump failure. CORRECTION Remove and replace Motor Electronics Cooling System pump. Refill and bleed electronics cooling circuit, clear hybrid DTCs and verify pump operation.
2008 Mazda Tribute Hybrid – Sunroof Does Not Stop Closed
CUSTOMER CONCERN Customer states the sunroof does not stop correctly at the closed position and one-touch opening is inoperative after sunroof service. CAUSE The sunroof motor's internal position switch was no longer synchronized with the roof-panel position. CORRECTION Perform sunroof motor synchronization procedure. Verify correct closed position and one-touch operation.
2008 Lexus RX400h – ABS Brake and TRAC Lights With C1391
CUSTOMER CONCERN Customer states the ABS, brake and traction-control warning lights are on. DTCs C1241, C1256 and C1391 are stored. CAUSE Accumulator-pressure voltage dropped after the pump shut off, confirming internal leakage in the ABS brake actuator assembly. CORRECTION Remove and replace ABS brake actuator assembly. Perform actuator initialization and brake-system bleed. Clear brake DTCs.
2008 Lexus RX400h – No Start With P0351
CUSTOMER CONCERN Customer states the engine will not start and DTC P0351 returns immediately after clearing. CAUSE Lab-scope testing of the IGT command and IGF feedback circuits confirmed a failed ignition-coil assembly. CORRECTION Remove and replace failed ignition-coil assembly. Clear DTC P0351 and verify normal starting operation.
2008 Lexus RX400h – Engine Temperature Fluctuates With P0117
CUSTOMER CONCERN Customer states the engine-temperature reading fluctuates while driving and DTC P0117 returns after coolant-temperature sensor replacement. CAUSE The 5-volt reference and warmed-up sensor signal tested correctly, confirming the radiator was not maintaining stable coolant temperature. CORRECTION Remove and replace radiator. Refill and bleed engine cooling system, clear DTC P0117 and verify stable coolant temperature.
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