LEXUS RX Key fob battery replacement Cost
2004–2008 · Engine, Fuel & Emissions system
Typical range
$36–$91
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. LEXUS RX battery replacement typically costs $36–$91 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 LEXUS RX typically takes 0.2–0.5 hours at a garage.
How often does this need to be done?
For a LEXUS RX, this is typically needed every 3–5 years, or sooner in extreme hot or cold climates.
Other engine, fuel & emissions system repairs on the LEXUS RX
- ABS hydraulic unit replacement$421–$771
- ABS sensor replacement$173–$318
- ABS system bleeding$139–$254
- AC compressor clutch replacement$347–$635
- AC compressor replacement$371–$681
Key fob battery replacement cost on similar cars
- HYUNDAI Santa Fe$32–$58
- HONDA CR-V$32–$58
- TOYOTA Highlander / Kluger$32–$58
- KIA Sorento$32–$58
- RENAULT Koleos$32–$58
Get the exact price for your LEXUS RX
Prices vary by year, engine and location. Tell us about your specific car.
Get my price estimate →