Book an ECU Repair for your Mercedes| RAC

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.

ECU Repairs for Mercedes vehicles requires specialist tools and workshop facilities, so this work is completed through the RAC Approved Garage Network. Our approved garages service models such as A-Class, C-Class, GLC, E-Class, and EQA, following manufacturer procedures, certified equipment standards and rigorous quality checks. You receive transparent pricing, progress updates and RAC‑backed guarantees.

Close up of an RAC Mobile Mechanic underneath a car

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.

Quality work

Any work done will meet the high standards set by the RAC.

Exceptional customer service

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.

Diagnostic check

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

View all garages

Motorbitz

4.4/5

Welcome to Motor Bitz Based in Besthorpe near Attleborough we are a family run MOT/Service & Repair centre and can take care of all your motoring needs. Whether you are looking for an MOT, part worn tyres, servicing, engine diagnostic or perhaps a recovery service we can help. We can also take care of repairs and welding work. Our Team Roger: Roger has worked within the motor trade for 30 years and has a passion for classic fords and performance vehicles. We call him the 'grease monkey' as he is never happier than to be head to toe in oil. Roger carries out most of the heavy work including commercial, engine swaps, clutches and gearboxes. Simon: Simon is a qualified MOT tester, with a passion for classic and American vehicles. With his extensive experience of over 42 years in the motor trade industry - Simon is a real asset to the company. Customer relations is his speciality. Neil: Neil is a qualified MOT tester and is also a qualified HGV fitter. Neil has an interest in all vehicles, but his passion is in classic cars, bikes and commercials. Neil is the master of all things delicate often carrying out some of our more technical work and a great welder too!

Unit 3, Silver Street, Besthorpe, Attleborough, NR172LD

Dsr Autos Limited

4.6/5

If you’re looking for affordable quality work carried out by skilled technicians and delivered with great customer service in Leicester then you’re in exactly the right place. We are one of the leading independent motor vehicles repair specialist garages in Leicester. If you need a motor vehicle service, MOT or car, van and Lcv repair in the Leicester area for all range of manufacturers’ vehicles, our friendly local technicians are here to help today. DSR Autos Limited are approval by the RAC Garage Network & audited so you can can be sure both you and your car will enjoy a top-notch service giving you total peace of mind every time. **RAC approved garage network works to the RAC customer charter. A code of conduct which has been approved by the Chartered Trading Standards Institute so you can be absolutely confident that you’re in safe hands. We look forward to seeing you with your beloved vehicles MOT and repairs Our Services: Petrol, Diesel, hybrid & EV Testing Timing Belts replaced Air Con Regas/repair Brakes & Clutches Suspension & Steering Car Servicing & Repair Exhaust & Batteries Welding Mot Class 4 & 7 Arrange Used Cars Sales Finance Extended Warranty Payment Assist/ 0% interest free payments. Diagnostics Mercedes, BMW, And Mazda VAG Group Digital Service Available with Genuine Parts ( price available on request ) Repair Centre: Opening Hours: Monday to Saturday 08.30am to 06.00pm Used car sales: Opening Hours: Monday to Saturday 08.30am to 06.00pm and sunday 11.30 am to 04.30pm sunday is by appointment only. We only use quality replacement parts. All our workmanship is guaranteed with 12 months of parts and labour.

17 Layton Road, Off A47 Uppingham Road, Leicester, LE50PU

Farnsfield Auto Centre

4.3/5

Farnsfield Auto Centre is a family owned garage servicing all your vehicle needs in Nottingham, Farnsfield and Newark areas. We are a full serviced garage located in Southwell Road in Farnsfield. Servicing cars and vans in the local area has provided us with a 2nd to none customer service and reputation. Our reputation is built on quality and efficiency when it comes to automotive servicing sector. Our technicians are all fully qualified and highly trained, and are always available to answer your questions around car problems or parts in the Nottingham, Farnsfield and Newark areas.

Southwell Road, Farnsfield, Newark, NG228EB

RSP Vehicle Specialist

5.0/5

We can carry out MOT, servicing and repairs to all makes and models of cars and light commercial vehicles. We specialise in engine reconditioning and gearbox repairs. We also have an in house auto electrician for all electrical issues and accessories. At Eurorepar Car Service, we’re all about keeping you and your car moving with confidence. As a trusted network of local garages, we provide high-quality car maintenance and repairs tailored to your needs – all at competitive prices. With our exclusive Brakes for Life program and a 2-year parts and labour warranty, you can drive away knowing you’re covered for the long haul.* Ask your Eurorepar Car Service Centre to fit Eurorepar branded parts to qualify. Claims under the 2-year parts and labour warranty must be made at a Eurorepar Car Service Centre. Discover expert care, unbeatable value, and peace of mind – all under one roof. Ready to experience the Eurorepar difference? Request a quote or give us a call today! *Terms and conditions apply.

3 Katrine Ave, Righead Industrial Estate, Bellshill, ML43LS

LDN AUTO SERVICES LTD

4.2/5

Welcome to LDN Auto Services, we take pride in offering a wide range of services to cater to all your vehicle repair needs. From basic maintenance tasks such as oil changes and brake inspections to more complex repairs like engine overhauls and transmission replacements, our team of skilled technicians is here to ensure that your vehicle is running smoothly and efficiently. Trust LDN Auto Services for all your automotive needsHighly experienced technicians with expertise in a wide range of vehicles - RAC Approved Garage - State-of-the-art equipment to diagnose and repair vehicle issues efficiently - Competitive pricing and transparent billing for quality service

Unit 9, Harrison Drive, Braintree, CM71DE

Frequently asked questions about ECU repairs

Can my damaged ECU be repaired?

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.

Can I fix the ECU myself?

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

What are the signs of a failing ECU?

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

How long will my ECU repair take?

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

Is my ECU repair covered by car insurance?

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.