If you’re experiencing Mercedes ECU problems, don’t worry, we can help. We are automotive control module remanufacturing specialists, offering our bespoke service on a wide range of commonly failing Mercedes ECUs.

Whether your Mercedes has a faulty engine ECU or a malfunctioning instrument cluster, we’ll restore functionality in just 2-3 working days and cover you with an unlimited-mile warranty! 

A Mercedes ECU malfunction spells trouble for your vehicle which won’t clear until the control module has been professionally repaired or rebuilt.

Immediate signs of failure often come in the form of erratic vehicle behaviour or warning lights. However, this quickly develop into serious performance issues and, in some cases, renders the vehicle completely undriveable.

Thankfully, we test and rebuild a huge range of ECUs for most Mercedes models.

Find a selection of Mercedes ECUs we commonly rebuild below, or browse our product catalogue for our entire range.

Can’t find your Mercedes ECU? Browse our full Mercedes rebuild range.

Can a damaged Mercedes ECU be repaired?

Don’t panic, in many cases a failed Mercedes ECU can be repaired. This of course depends on the type and extent of the damage.

Due to the nature of mass production, many Mercedes ECUs are equipped with low-quality internal components which inevitably break down early in the vehicle’s lifetime. Whilst internal component degradation might cause some pretty scary issues for your vehicle, it can often be rectified by high-quality remanufacturing services.

However, if your control module has been exposed to water damage or has experienced excessive current draw, it’s possible the Mercedes ECU has been so severely damaged that a repair is no longer viable.

Thankfully, our Mercedes ECU testing service examines your faulty control module using state-of-the-art rigs to determine whether a rebuild is still viable. If it is, and you choose for us to remanufacturer it, we’ll waive the testing fee.

How much does it cost to repair a Mercedes ECU?

The cost of repairing your Mercedes ECU varies depending on the type of control module in question and the specific model.

Some Mercedes ECUs are more intricate than others, making a repair more difficult and expensive - this is common for luxurious vehicles like the S-Class and its sophisticated instrument cluster.

Cost also depends on the type of Mercedes ECU repair option you opt for. A brand-new replacement is the costliest solution, whilst a Mercedes ECU repair or rebuild will save you some money.

Mercedes ECU: repair, rebuild or replace?

When attempting to remedy your Mercedes ECU problems, it’s important to understand whether you need a replacement, a rebuild or a repair.

A Mercedes ECU repair is a low-cost solution that involves switching out faulty components with new ones. Whereas a rebuild will completely rework your control module internally so that the root cause of failure is removed and prevented from returning.

Opting to replace your faulty control module with brand-new brings its own challenges. As many ECU failures haven’t yet been removed at factory level, replacement control modules are liable to fail in exactly the same manner. Not only this, but it’ll cost you more than a rebuild and you’ll only be covered by short-term warranty.

Our Mercedes ECU service

Thankfully, we offer a specialist Mercedes ECU test-and-rebuild service which takes just 2-3 working days.

Our expert technicians will rebuild your Mercedes ECU with higher-than-OEM-standard components to enhance long-term durability. We’ll test your unit on state-of-the-art rigs which simulate real-world driving conditions to ensure your rebuilt control module is ready for action. You’ll be able to fit your ECU straight back to the vehicle too, as our process retains all coding information stored in the unit when you sent it to us.

Which Mercedes ECUs do we rebuild?

We rebuild a wide range of Mercedes ECUs for many models, but there are some we see time and time again.

Many Mercedes vehicles suffer from transmission control module failure – particularly those fitted with 722.8 or 722.9 transmission. When these important modules fail, engine power is lost, gear shifts become rough and in some cases the vehicle won’t drive at all.

In addition to these tricky TCMs, we find many of the most popular Mercedes models, like the C-Class and S-Class, have suffered ABS module failure. This is due to the problematic ATE MK61 ABS module which causes an ABS warning light and power steering issues when it malfunctions – find out more here.

Thankfully, we’ve been rebuilding these units for many years now. Get your Mercedes ECU rebuilt rather than repaired, fill out our short test form to get started.