MERCEDES BENZ E-Klasse and predecessors Key fob battery replacement Cost
2002–2006 · Engine, Fuel & Emissions system
Typical range
$40–$78
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. MERCEDES BENZ E-Klasse and predecessors battery replacement typically costs $40–$78 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 MERCEDES BENZ E-Klasse and predecessors typically takes 0.2–0.5 hours at a garage.
How often does this need to be done?
For a MERCEDES BENZ E-Klasse and predecessors, this is typically needed every 3–5 years, or sooner in extreme hot or cold climates.
Other engine, fuel & emissions system repairs on the MERCEDES BENZ E-Klasse and predecessors
- ABS hydraulic unit replacement$425–$765
- ABS sensor replacement$175–$315
- ABS system bleeding$140–$252
- AC compressor clutch replacement$350–$630
- AC compressor replacement$375–$675
Key fob battery replacement cost on similar cars
- BMW 5 Series Sedan$39–$69
- AUDI A6 Avant$35–$63
- VOLVO S80$39–$69
- SAAB 9-5$35–$63
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