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2010 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.

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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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