2009 Mercury Mariner Hybrid Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 2009 Mercury Mariner Hybrid

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2009 Mercury Mariner Hybrid Problems

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

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.

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

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.

Hard driving conditions may cause rear motor mount to crack

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.

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2009 Mercury Mariner Hybrid Questions

fuel system maintenance (2 answers)

How often should the fuel filter and fuel injection nozzles be cleaned by dealer. Can I do it myself?

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2009 Mercury Mariner Hybrid Reviews

I traded in a 2000 Chev Tahoe LT for my 2009 Mercury Mariner I has more pick up when geting on the freeway smaller easy to drive the in cabin lighting is great the hybrid engine works fine. My only complaint is the engine noise is a little louder then I would like. The navigation & sync system are great all and all I really like the Hybrid mercury Mariner. I'm getting 34-36 MPG

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