Compare Mercedes ECU repair quotes from specialist garages

In 1886, Karl Benz - the founder of Mercedes Benz - introduced what is often considered the first petrol-powered car to the world. The Benz Patent Motor Car was born, and with it began a legacy that continues today.

Style, luxury and innovation are the driving forces behind Mercedes. Not only was it one of the first car manufacturers to put brakes and suspension on all four wheels, but it was also the first to introduce safety crumple zones.

Cars by Mercedes have appeared on the big screen numerous times, from the S-Class used by Jason Statham in The Transporter to escape a gunfight to the 1969 280 SE Convertible driven by Hugh Grant in Bridget Jones's Diary.

See how Mercedes' maintenance costs compare with BMW's and Audi's here.

ECU stands for engine control unit, sometimes referred to as the engine control module (ECM). This component ensures your car's engine runs smoothly by, for example, determining the amount of fuel that goes into the cylinders. You can find out more about how it works here.

Signs of a faulty ECU include misfires, the check engine light, starting problems, and engine surges or lags. ECU testing and repairs can help you work out the cause of the problem, such as faulty wiring or a bad sensor.

ECU testing uses a diagnostic tool known as an OBD scanner, which extracts information from the car's computer and allows the technician to check fault codes.

Can an ECU be repaired? Most of the time, the answer is yes; the ECU can be reprogrammed or repaired. The same applies to water damaged ECUs, as long as the damage is minimal. Some technicians may offer mobile ECU repairs at a location that's convenient for you.