A failed heater blend door or actuator can cause the temperature control for the HVAC system to stop working. A clicking sound from the dash area would commonly indicate an actuator fault. If the heater gets stuck on the hottest setting, the heater blend door may be broken requiring replacement of the heater box to repair the issue.
Resources for the Repair and Maintenance of your 2007 Mercury Mountaineer
2007 Mercury Mountaineer
2007 Mercury Mountaineer Problems
The rear wiper may stop working. This could be due to a rear wiper motor that has failed requiring replacement.
Our technicians tell us the spark plugs in this engine can be very difficult to remove. Ford has issued a service bulletin (08-7-6) to address this issue, which includes a recommended procedure on how to remove the plugs. Failure to follow the recommended procedure can result in the one or more spark plugs breaking off in the cylinder head.
The recommend procedure is as follows. Using this procedure will greatly reduce the chance of breakin...
2007 Mercury Mountaineer Questions and Answers
I have a leak on the passenger side. The floor gets soaked after rain. I can hear water sloshing around when moving
How do I reset the "Change Oil" on the Message Center on my 2007 Mercury Mountaineer? I had the oil change by a dealer within the last two weeks and now this light appears. I would rath...
I need to know where to look on my vehicle to check the transmission, and can I add transmission fluid myself?
I would like to know where to connect my trailer brake controller to the mountainerr . does it have an connector under the dash?