2011 Mercury Mariner Hybrid Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 2011 Mercury Mariner Hybrid

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2011 Mercury Mariner Hybrid
$
365
to $
610
2011 Mercury Mariner Hybrid
$
389
to $
1,600
2011 Mercury Mariner Hybrid
$
148
to $
282
2011 Mercury Mariner Hybrid
$
52
to $
122
2011 Mercury Mariner Hybrid
$
322
to $
449

2011 Mercury Mariner Hybrid Problems

A/C Fan Speed Changing Constantly

The Mercury Mariner Hybrid equipped with automatic temperature control may have a problem with frequent fan speed changes when using the heater or air conditioner. Normally, the fan speed changes only to maintain a selected temperature, but when the fan speed changes frequently and needlessly, there is an issue with the fan speed control unit. 

The fan speed control unit, sometimes erroneously called the blower motor resister, regulates the speed for the blower motor in order to maintain the temperature set by the driver. When it fails, the fan will run at random settings, and the climate control will be inaccurate.

Note: this does not affect the temperature of the air that comes from the vents, it affects the amount of air that comes from the vents. 

The repair is simple, and quick. The control unit is located behind the glove box in most models, and removal and installation takes only minutes.

Also note: this only applies to vehicles with single or dual automatic climate control.

Blower Motor Only Works on High

The 2008-2011 Mercury Mariner Hybrid with manual temperature and fan controls may have problems with the the blower motor only blowing air on certain settings. Most commonly the fan will only run on the highest setting. This is a well documented problem, and is caused by a failing blower motor resistor.

Correcting the problem is straight forward, and requires replacement of the small resistor. The resistor is normally found behind the glove box, next to the blower motor.

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