Lexus RX 400h / RX 450h Hybrid Battery Replacement
The Lexus RX 400h and RX 450h use the same three-motor AWD architecture as the Toyota Highlander Hybrid — front transaxle motors plus a rear axle electric motor, all powered by a 288V NiMH battery pack. The RX is one of BC's most popular luxury SUVs, and its hybrid variant is particularly common in the Kelowna and Okanagan markets where AWD for winter driving is valued. Battery failure in the RX hybrid often first manifests as loss of rear electric drive and AWD, which is a significant capability loss for a luxury all-season vehicle.
Replacement Pricing
Battery Type
NiMH, 288V, 240 cells
Common Fault Codes
P0A80 · P0A7F · P0AFA · P0A93
vs. BC Dealer
$7,000–$10,000From $1,899
Warning Signs — Lexus RX 400h / RX 450h Battery Failing
- Battery warning and master warning lights
- AWD system warning — rear electric motor disabled
- Engine working noticeably harder at highway speeds
- Fuel economy dropping from ~10 L/100km to 15+ L/100km
- VSC and traction control warnings (triggered by hybrid fault)
Seeing one or more of these symptoms? Call us for a free phone assessment — we can often narrow down the cause before you even book a diagnostic.
What's Included in the Service
- Full pre-install diagnostic scan and module voltage testing
- Premium remanufactured or OEM replacement battery pack
- Complete pack load test before installation
- Coolant and thermal management system check
- All labour and hardware included
- Post-install system reset and hybrid calibration
- Road test to confirm full system operation
- Up to 5-year written warranty on the replacement pack
- Eco-responsible recycling of your old battery
Lexus RX 400h / RX 450h — Service Notes
RX hybrid battery replacement requires access through the rear cargo area and takes approximately 3–4 hours. The three-motor system requires a full post-install calibration check before the vehicle is road-ready.
Mobile Service Available
We can perform Lexus RX 400h / RX 450h battery replacement at your home, office, or workplace across Kelowna, West Kelowna, Vernon, Penticton, and beyond. No tow truck required.
Lexus RX 400h / RX 450h Battery — Common Questions
Specific to this vehicle. Call us for anything not covered here.
Yes. The AWD system in the RX 450h relies on the rear electric motor drawing power from the HV battery. When the battery is detected as failing, the hybrid control module disables the rear motor — which is why the AWD warning and battery warning appear together. Full AWD function is restored once a new battery pack is installed.
Lexus dealerships in BC typically quote $7,000–$10,000 for an RX 400h or RX 450h battery replacement. Our price is $1,899 for the same job with the same or better warranty. The savings on this model are consistently among the largest we offer.
Ready to Fix Your Lexus RX 400h / RX 450h?
Free phone estimates. Same-day service available in Kelowna. Mobile service across the Okanagan.