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Newest reported 2009 Mercury Mariner Hybrid problems

Coolant Pump on Hybrid May Fail and Cause CEL/Engine Shutdown

for the Mercury Mariner Hybrid

The hybrid models have a coolant pump that cools control electronics. The pump can fail or spin slowly, which causes a Check Engine Light to illuminate and complete engine shut down.

24 Reports

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Check Engine Light With Code P0442, P0456, and/or P1450

for the Mercury Mariner Hybrid

The Check Engine Light may illuminate with code P0442, P0456, and/or P1450. These codes are related to the EVAP system. Our technicians tell us that if no EVAP system faults are confirmed, updated software is available for the powertrain control module (PCM) which should correct this concern.

1 Report

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Hard driving conditions may cause rear motor mount to crack

for the Mercury Mariner Hybrid

Hard driving conditions, including quick starts from a stop and hard acceleration up hills, can cause the rear motor mount to crack. The broken motor mount needs to be replaced, otherwise damage to the hybrid drive system may result.

5 Reports

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