MERCURY Mountaineer Key fob battery replacement Cost
2006–2010 · Engine, Fuel & Emissions system
Typical range
$40–$101
Parts + labour
Labour hours
0.2–0.5h
At a typical garage
The 12 V battery starts the engine and powers electronics when the car is off. Most batteries last 3–5 years; warning signs include slow cranking, a battery warning light, and electrical gremlins. MERCURY Mountaineer battery replacement typically costs $40–$101 including the new battery.
Typical parts included
- Key fob battery
What affects the price
- Battery group size and CCA (cold cranking amps) rating
- OEM vs aftermarket brand (Bosch, Varta, Optima)
- Whether the ECU requires a reset or recalibration after replacement
Common questions
How long does this repair take?
Key fob battery replacement on a MERCURY Mountaineer typically takes 0.2–0.5 hours at a garage.
How often does this need to be done?
For a MERCURY Mountaineer, this is typically needed every 3–5 years, or sooner in extreme hot or cold climates.
Other engine, fuel & emissions system repairs on the MERCURY Mountaineer
- ABS hydraulic unit replacement$468–$842
- ABS sensor replacement$193–$347
- ABS system bleeding$154–$277
- AC compressor clutch replacement$385–$693
- AC compressor replacement$413–$743
Key fob battery replacement cost on similar cars
- LAND ROVER Range Rover$42–$76
- JEEP Grand Cherokee$39–$69
- CHEVROLET Tahoe$42–$76
- FORD Expedition$42–$76
- GMC Yukon$42–$76
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