Independent Mercedes Specialists — Simi Valley
Precision Mercedes-Benz service from certified European auto technicians.
Factory-Level Diagnostics
XENTRY/DAS — the same software as every authorised Mercedes-Benz dealer.Oil & Filter Service
Factory-spec oil changes with OEM or premium synthetic oil and filter.
Learn More →Brake Service & Repair
Pad, rotor, caliper, and brake fluid service. Safety inspected every visit.
Learn More →Diagnostics & Scan
Factory-level diagnostic scanning for all fault codes, modules, and systems.
Learn More →Transmission Service
Fluid exchange, filter, and full inspection for automatic and manual transmissions.
Learn More →Cooling System Service
Coolant flush, thermostat, water pump, and radiator inspection and repair.
Learn More →Suspension & Steering
Shocks, struts, tie rods, bushings, and full wheel alignment service.
Learn More →Independent Specialists
Dealer tooling. Independent pricing. Simi Valley, CA.Mercedes-Benz engineering demands more than a generic scan tool. AIRMATIC air suspension requires calibration after every strut replacement and level sensor swap — a step most independent shops skip. The 7G-Tronic and 9G-Tronic transmissions need proper SCN coding after valve body work, not just a fluid change. AMG engine variants — M156, M177, M178 — carry specific tolerances and service protocols that differ from their non-AMG counterparts. We use XENTRY/DAS diagnostic software and perform coding, SCN programming, and adaptation resets in-house for every affected system.
Our team understands the Mercedes service interval philosophy: the ASSYST service indicator isn't just a mileage counter — it's a consumption model that accounts for driving style, load, and thermal cycles. We reset it correctly, use only MB 229.3/229.5/229.52-approved lubricants, and document every service to protect your Mercedes service history. We also perform AIRMATIC plausibility checks at every oil service — catching air spring fatigue before it becomes a compressor failure.
M278 V8 — factory-spec service and inspection.
Whether you drive a C-Class daily driver, an S-Class with Full AIRMATIC and MAGIC BODY CONTROL, or an AMG GT with a hand-built flat-plane V8, German Auto Doctor treats your vehicle with the level of care its engineering deserves — and gives you the direct communication and transparent pricing a dealership rarely will.
Yes. We service the full AMG lineup including the M156 naturally aspirated V8, the M177 twin-turbo, and current AMG four-cylinder models. Our XENTRY/DAS diagnostic access covers AMG-specific modules, performance maps, and adaptation values that generic OBD scanners and non-specialist shops cannot reach.
Yes. We service both the 7G-Tronic (722.9) and 9G-Tronic (725.0) with the correct Mercedes-approved ATF and external filter replacement. Skipping transmission service past 60,000 miles is the leading cause of 7G-Tronic mechatronic unit failure — an expensive repair that regular fluid service prevents.
Mercedes engines require MB 229.3, 229.5, or 229.52 spec oils depending on year and engine. Many general shops use incorrect viscosities — often 5W-30 instead of 0W-40 or 5W-40 — which accelerates wear on the OM642 diesel and M278 V8 in particular. We match the exact oil specification to your VIN before every service.
Yes. AIRMATIC strut replacement, compressor service, valve block diagnosis, and level sensor calibration are all routine procedures here. We stock Arnott and OE-spec struts and always perform a four-corner electronic calibration after any suspension repair to restore proper ride height and handling balance.
Trusted in Simi Valley
“I’ve been taking my C300 here for three years. They use the same XENTRY system as the dealer, but they actually explain what they found and what it means. Saved me $600 on a balance shaft scare — turned out to be a sensor. Wouldn’t go anywhere else.”