7G-Tronic and 9G-Tronic gearbox oil service

Which gearboxes does this service cover?

This page covers the oil and filter service for these Mercedes-Benz automatic gearboxes:

• 7G-Tronic (722.9), a seven-speed automatic, also used in the V-Class and Vito.
• 9G-Tronic (725.0 and 725.1), a nine-speed automatic, used in cars and in the V-Class and Vito.

If you are not sure which gearbox your Mercedes has, put the registration in the enquiry form and we will check.

Which fluid does each gearbox take?

Mercedes publishes a fluid specification sheet for each gearbox. We use fluid that meets the sheet listed for yours:

• 7G-Tronic without equipment code A89: sheet 236.14.
• 7G-Tronic with equipment code A89: sheet 236.15. This is also the sheet listed for the 7G-Tronic in the V-Class and Vito.
• 9G-Tronic 725.0: sheet 236.17. Some earlier Mercedes documents named 236.16, but the current sheet lists 236.17.
• 9G-Tronic 725.1: sheet 236.18 preferred, with 236.17 also listed.

Why must the two 7G-Tronic fluids not be mixed?

The 7G-Tronic has been built in two versions, told apart by equipment code A89, and each version has its own fluid sheet: 236.14 without the code and 236.15 with it. Mercedes says the two fluids cannot be mixed.

So before we drain anything, we identify which version your gearbox is from the car’s equipment codes. We then refill with the one fluid that matches, and never top up one with the other.

How often does the gearbox oil need changing?

There is no single figure for every Mercedes. The interval varies by gearbox and by car, so we work from your vehicle’s own schedule rather than a general rule.

Send us the registration and mileage and we will tell you whether the gearbox service is due.

What does the service involve?

We:

• drain the old fluid and change the filter
• refill with fluid that meets the sheet for the gearbox
• set the fluid level the way Mercedes specifies, with the gearbox at the specified temperature

After the service we check for leaks and road test the car where appropriate.

Should I check for a recall first?

Whether a recall applies depends on the individual car, so check your registration on gov.uk. Recall work is done by the manufacturer’s network, not by us.

Is the gearbox service part of Service A or B?

The gearbox has its own schedule. If both are due, we can do them in the same visit. See our Mercedes Service A and Service B page.