Hybrid and EV repair Chico CA. Toyota Prius, RAV4 Hybrid, Honda, Ford. HV battery diagnosis, 12V battery, oil change. Written diagnosis. NAPA Gold. (530) 826-4275.
Prius, RAV4 Hybrid, Camry Hybrid, Accord Hybrid, Clarity, Escape Hybrid, Volt, and more. HV battery diagnosis, 12V battery, oil change, brakes, cooling. Written diagnosis before any HV work. NAPA Gold warranty.
Tedious Auto Repair services hybrid vehicles in Chico — Toyota Prius, RAV4 Hybrid, Camry Hybrid, Honda Accord Hybrid, CR-V Hybrid, Ford Escape/Fusion Hybrid, Chevy Volt, and more. HV battery state-of-health diagnosis with OEM-level scan tools. 12V battery, oil changes, brakes, cooling system, and all routine maintenance. Written report before any high-voltage repair is recommended. By Buddy Rausch, Owner / ASE Master Technician · Reviewed May 20, 2026
State-of-health assessment using OEM-level scan tools with live cell voltage monitoring. We identify weak cells, measure pack capacity, and assess balance across all modules. Written report with findings before any HV battery work is recommended. We do not recommend HV battery replacement without confirming SOH data.
Every hybrid has a 12V auxiliary battery that powers accessories and control modules. This battery fails on the same 3–4 year Chico heat timeline as regular car batteries. A failed 12V battery causes hybrid system faults, ready mode failures, and warning lights — often misdiagnosed as HV battery issues. We test both at every inspection.
Most hybrids specify 0W-20 full synthetic. The Prius engine runs a unique Atkinson cycle with frequent hot/cold cycling — full synthetic is essential, not optional. We use Honda 0W-20, Toyota 0W-20, or the correct spec for your hybrid. Includes free 100-point digital inspection with HV system check.
Hybrid brakes last longer than conventional — regenerative braking reduces physical brake use. But rotors develop surface rust from underuse, and calipers can seize from inactivity. We test regenerative braking function and inspect physical brake hardware at every brake service. Pads and rotors from $599.99/axle.
Hybrids have two cooling systems — the engine circuit and the HV inverter/motor circuit. Both require separate coolant service. Toyota HV inverter coolant is a different spec from engine coolant. Prius inverter coolant pump failures are a common fault we diagnose and replace.
We perform all non-HV maintenance on electric vehicles: 12V battery, brake service, tire rotation, alignment, cabin air filter, wiper blades, and general inspections. We do not perform HV battery pack replacements on pure EVs — those require manufacturer HV certification equipment.
Red triangle = HV system fault. Could be a weak cell in the battery pack, an inverter fault, or an MG (motor/generator) issue. Scan the HV system before assuming HV battery replacement — many triangle light faults are sensor or software issues, not pack failure.
Gradual fuel economy decline in a Prius or hybrid usually means HV battery degradation — cells can no longer hold full charge. SOH test confirms the scope. Can also be an oxygen sensor or EGR issue affecting engine efficiency — diagnosis separates these.
Press the power button, green READY light doesn't appear — hybrid won't start. Most common cause: dead 12V auxiliary battery. Second: HV system fault requiring scan. Third: contactor relay failure. We test 12V first — it's the most common and least expensive cause.
2695 CA-32, Chico · (530) 826-4275
Yes — Toyota Prius (all generations), RAV4 Hybrid, Camry Hybrid, Highlander Hybrid, Honda Accord Hybrid, Clarity, CR-V Hybrid, Ford Escape Hybrid, Fusion Hybrid, Chevy Volt, and most other hybrids. Oil changes, 12V battery, brakes, cooling system, and hybrid-specific diagnosis.
Yes. We perform a state-of-health (SOH) assessment of the high-voltage battery pack using OEM-level scan tools and live cell voltage monitoring. Weak cell identification, balance testing, and capacity estimation. Written report before any HV battery work is recommended.
Yes — most hybrids specify 0W-20 full synthetic (Honda, Toyota, Ford). The Prius has a unique engine cycle that runs hot and cold repeatedly, making full synthetic essential. Oil change from $89.98.
Yes. Hybrids use regenerative braking — the electric motor acts as a generator to recover energy. Physical brakes are used less, so pads last longer but rotors can develop surface rust from underuse. We test the regenerative braking system function at every brake inspection.
Yes. 12V auxiliary battery replacement, brake service, tire rotation, alignment, cabin air filter, and general maintenance. We do not perform high-voltage battery pack replacements on pure EVs (Tesla, Chevy Bolt) — those require manufacturer-certified HV equipment.
Toyota NiMH batteries (Prius Gen 1–3): 150,000–200,000+ miles with good thermal management. Lithium-ion packs (RAV4 Hybrid, Prius Gen 4+): 100,000–150,000+ miles. Chico's heat is harder on lithium packs than NiMH. We check HV battery SOH at every pre-purchase inspection.
HV battery diagnosis · 12V battery · Oil from $89.98 · Written report · NAPA Gold warranty
📍 2695 CA-32, Chico, CA 95973 · Open Mon–Fri 7AM · Sat 8AM · Sun 9AM — Close 5PM · Open 7 Days
Buddy Rausch founded Tedious Auto Repair in Chico, CA in 2007 and has been serving Butte County for 18+ years. As an ASE Master Technician, Buddy personally oversees diagnostics and quality control on every vehicle. All content on this page reflects real procedures, OEM specifications, and cases seen in the shop. About Buddy Rausch, ASE Master Tech →
Buddy Rausch founded Tedious Auto Repair in Chico, CA in 2007. ASE Master Certified. 18+ years serving Butte County. About Buddy Rausch