Mercedes-Benz automatic gearbox repair
We specialise in repairing and rebuilding automatic gearboxes in Mercedes-Benz vehicles. Our specialists have years of hands-on experience with every gearbox this manufacturer fits.
Common Mercedes-Benz gearbox models
A 7-speed automatic gearbox and one of the most widely used at Mercedes. Fitted from 2003 onwards.
The latest 9-speed automatic gearbox, giving even better fuel economy.
A 5-speed automatic gearbox, exceptionally durable and fitted to the older models.
Most common Mercedes-Benz gearbox problems
Mercedes-Benz gearbox maintenance tips
Need your Mercedes-Benz gearbox repaired?
Get in touch today. Diagnosis is free and our pricing is competitive.
Call: +48 736 703 330Frequently asked questions
Which automatic gearbox models does Mercedes-Benz use?
7G-Tronic (722.9): A 7-speed automatic gearbox and one of the most widely used at Mercedes. Fitted from 2003 onwards. 9G-Tronic: The latest 9-speed automatic gearbox, giving even better fuel economy. 722.6: A 5-speed automatic gearbox, exceptionally durable and fitted to the older models.
What are the most common problems with Mercedes-Benz automatic gearboxes?
Conductor plate failure: A worn conductor plate in the 722.9 causes leaks and incorrect operation. VGS module failure: The gearbox control unit often fails because oil creeps into it. Valve body wear: Typical of 722.6 gearboxes at high mileage.
How often should the oil in Mercedes-Benz automatic gearboxes be changed?
An oil change every 60,000 km is essential
Do you repair every Mercedes-Benz gearbox model?
Yes, we specialise in repairing every type of Mercedes-Benz automatic gearbox, including 7G-Tronic (722.9), 9G-Tronic, 722.6.
How long does a control unit repair take on Mercedes-Benz automatic gearboxes?
Repairing the control unit in Mercedes-Benz automatic gearboxes usually takes 2 to 5 working days, depending on the fault. Simple electronic faults take 1-2 days; complex failures that need cloning or software modification can take up to a week.
Which parts do you use to repair Mercedes-Benz gearboxes?
We use only original Mercedes-Benz parts and high-quality equivalents from reputable manufacturers. For control units we fit original electronic components, capacitors and integrated circuits. For mechanical gearbox parts we use original clutches, solenoids and filters.
Can failures of Mercedes-Benz automatic gearboxes be prevented?
Yes, regular servicing considerably extends the life of Mercedes-Benz automatic gearboxes. The essentials: change the oil on schedule, avoid hard driving, monitor the oil level and condition, and have the car diagnosed as soon as the first symptoms appear.
What does a control unit repair cost on Mercedes-Benz automatic gearboxes?
The cost of repairing the control unit in Mercedes-Benz automatic gearboxes is quoted individually — it depends on the control unit and on the fault. Initial diagnosis is free and you get a detailed quote before any work starts. The price covers the repair, testing and the warranty.
Which symptoms point to a faulty Mercedes-Benz control unit?
Typical symptoms of a faulty Mercedes-Benz control unit are: jerking during gear changes, the gearbox entering limp mode, delayed response to gear changes, implausible fault codes during diagnosis, adaptation problems and the car suddenly being stuck in one gear.
Do you provide a warranty on Mercedes-Benz gearbox repairs?
Yes, every Mercedes-Benz automatic gearbox repair we carry out is covered by a warranty. Control unit repairs come with 12 months; mechanical repairs with 6 to 24 months depending on the scope of work. The warranty covers both parts and labour.
Common Mercedes-Benz automatic gearbox fault codes
Below are the fault codes that show up most often in automatic gearboxes from Mercedes-Benz. If you see any of these codes on a diagnostic tool, get in touch with us for a professional diagnosis.
Input turbine speed sensor
Output speed sensor
Input shaft speed sensor
Clutch C pressure control solenoid
Where to find us
Our workshop is in Deszkowice Drugie (Sułów commune). Get in touch to arrange a visit.
Workshop address:
- Address: Deszkowice Drugie 146, 22-448 Sułów
- Phone: +48 736 703 330