MCLAREN 720S Key fob battery replacement Cost
2017–2023 · Engine, Fuel & Emissions system
Typical range
$53–$182
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. MCLAREN 720S battery replacement typically costs $53–$182 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 MCLAREN 720S typically takes 0.2–0.5 hours at a garage.
How often does this need to be done?
For a MCLAREN 720S, this is typically needed every 3–5 years, or sooner in extreme hot or cold climates.
Other engine, fuel & emissions system repairs on the MCLAREN 720S
- ABS hydraulic unit replacement$586–$1.1k
- ABS sensor replacement$242–$441
- ABS system bleeding$193–$353
- AC compressor clutch replacement$483–$882
- AC compressor replacement$518–$945
Key fob battery replacement cost on similar cars
- AUDI R8$48–$88
- LOTUS Esprit$40–$73
- LAMBORGHINI Gallardo$56–$103
- BENTLEY Continental$56–$103
- ARIEL Atom$40–$73
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