BMW Z4 Roadster Key fob battery replacement Cost
2002–2006 · Engine, Fuel & Emissions system
Typical range
$38–$100
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. BMW Z4 Roadster battery replacement typically costs $38–$100 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 BMW Z4 Roadster typically takes 0.2–0.5 hours at a garage.
How often does this need to be done?
For a BMW Z4 Roadster, this is typically needed every 3–5 years, or sooner in extreme hot or cold climates.
Other engine, fuel & emissions system repairs on the BMW Z4 Roadster
- ABS hydraulic unit replacement$446–$829
- ABS sensor replacement$184–$341
- ABS system bleeding$147–$273
- AC compressor clutch replacement$368–$683
- AC compressor replacement$394–$731
Key fob battery replacement cost on similar cars
- MERCEDES BENZ E-Klasse Cabriolet and predecessors$37–$68
- SAAB 9-3 Convertible$37–$68
- AUDI A4 Cabriolet$37–$68
- CHEVROLET Camaro Convertible$44–$82
- VOLKSWAGEN Golf Cabrio$37–$68
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