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Service, Repairs & MOT

ECU repair for your Mercedes

Book a local RAC Approved Garage that you can trust.

  • 12-months parts guarantee
  • Honest pricing
  • Exceptional customer service

Why choose the RAC for an ECU repair?

At the RAC, we've got over 125 years' experience helping UK drivers. We have the skills and knowledge to keep your vehicle running. We'll give you results you can rely on at a price you can afford.

Close up of an RAC Mobile Mechanic underneath a car
A mechanic standing inside a garage

Book an ECU repair

The Engine Control Unit (ECU) is the brain of your vehicle and works to keep it running smoothly. If it's acting up, it can mean poor performance, increased fuel consumption, or trouble starting your car.

Any work done will meet the high standards set by the RAC.
We’re friendly, straightforward and jargon-free
A mechanic inspecting the underside of a vehicle.

Book a diagnostic

A mechanic will check your car for faults and talk you through any repairs you might need. There are various ways to check for faults, which could include a physical examination or plugging in to check your car’s onboard engine management system.

We’ll look for any mechanical or electrical problems. If we need to, we’ll also check your car’s onboard engine management system. Depending on your car and issue, this will usually include: – Engine – Power steering – Brakes – Transmission – Exhaust system – Fuel injection system – Cooling system and air flow – Sensors

And it’s not just ECU repairs that we do for Mercedes

RAC Approved Garages offer MOTs and services. Our professional mechanics have the expertise and experience to make sure your vehicle is operating safely and efficiently – results you can rely on at a price you can afford.

A close up of an RAC mobile mechanic looking under the hood of a car

Try one of our RAC Approved Garages

SH Diesel Repair Centre UK LTD

5.0/5

we are a Independent Injector & Turbo Specialist , Common Rail Injector Testing + Reconditioning & New available All Mechanical work undertaken from Services, Brakes, Exhaust, Suspension to Major engine work and Engine Rebuilds. Diagnostics Tyres At SH Diesel We are all professional, highly trained mechanics
66 Arthur Street, Lake Side, Reddich, B988JY

Car M.D. (Mossley) LTD

4.8/5

Car M.D. (Mossley) LTD in Mossley.
Car M.D (Mossley) Ltd, Mossley, OL59BG

Master MOT and Service Centre

4.0/5

We offer car and van Mot service six days a week from 9 am to 6pm.we offer car servicing brakes exhausts diagnostics Tyres replacement free pre mot checks
Unit3 Woodland Mill Hazelbottom Road M8 0Gq, Behind To Express Car Wash, Manchester, M80GQ

Heath Mill Garage

5.0/5

A real alternative to the Main Dealers offering Servicing, Tyres, Exhausts, 4 Wheel Alignment, Air Con and much more. Conveniently located on Heath Mill Road, Wombourne, close to Sainsbury's we offer a full range of facilities with a reception and waiting room, we also have courtesy cars available. We use top quality parts such as Brembo Braking and Shell Oils to ensure your vehicle is running at it's best. We also update Electronic Service Records for modern vehicles without a service book.
Heath Mill Road, Wombourne, Wolverhampton, WV58AP

Diplock Fuel Injection Services Ltd

5.0/5

We at Diplock Fuel Injection Services Ltd are a professional and friendly company based in Hailsham. Established since 1985, with individuals having over 50 years experience our car mechanics offer an array of car maintenance services. We specialise in diesel fuel injection and MOT testing, and can offer a comprehensive selection of repair work. We have built up a highly sought-after reputation and we come highly recommended by people in the trade. We also pride ourselves on offering very good rates on MOT tests; so please contact us for an unbeatable price!
Unit 3/4 Avocet Way, Diplocks Way, Hailsham, BN27 3JF

Frequently asked questions about ECU repairs

Yes, a damaged ECU can often be repaired. Whether it can be depends on the amount of damage and how easy it is to find replacement parts.

It's usually best to leave ECU repairs to the experts. This is because as they require special tools and knowledge of car electronics.

Look out for a check engine light being on, the engine stalling or misfiring, poor fuel economy and difficulty starting the car.

It can take anywhere from a few hours to a couple of days. This depends on the issue and how available the parts are.

ECU repairs may be covered if the damage is caused by something that is insurable, like an accident. Talk to your insurance provider to find out more.

There is no set interval for ECU checks, but it’s a good idea to have it looked at, if you see symptoms.