When to change ATF In 7G

[Carmatt]

My 2011 E350cdi came with a printout indicating a MB service history up to 72,000 in 2015. Since then only 10,000miles apparently but non MB servicing.
Am I safe to assume MB did the gearbox at the appropriate time (which is when, btw?) Is there a way of checking? Or does it need doing urgently?
I read somewhere that every 40,000 is a good idea.

 

[Blobcat]

40k is about right, should have been done then

 

[Carmatt]

Thanks. So it is about due then!
Subject to the correct grade ATF and temperature considerations when checking levels, is this something any competent mechanic can do? No specialist skills or tools?

 

[EmilysDad]

My R Class had apparenty been dealer serviced before I got it. When I asked at the MB dealer if it had been done the reply was ... it should've been
The local indie I asked to change it said it didn't look like it'd ever been done & that was at about 50k miles.

 

[Carmatt]

 

[alexanderfoti]

MB says every 70k or 5 years (after the first at 42k) but I recommend every 40k/5 years.

 

[Carmatt]

Sounds like I need to give Alex Crow a call

 

[RhodieBill]

If you are planning to keep the car any length of time I would do it as a matter of course anyway - it's something I do whenever I buy a car, (if an Auto) and an Oil and Filters change. Even if it is alleged to have been done recently.....

 

[LostKiwi]

I work on the principle that if I do it I know wten it was last done. Takes all the guesswork out.

 

[Carmatt]

My thinking too. I just emailed the local indy for a price.

 

[Blobcat]

MB says every 70k or 5 years (after the first at 42k) but I recommend every 40k/5 years.

Is that box dependent? I know MB were confused when I had them change the ATF in the 5G box in my W210 at the time.

My W211 has a single change at 37k with Mercedes as per the recommendation. That had the 7G box.

What is the 7G+ and 9G recommendations from Mercedes?

My latest 7G was done at 40k by Mercedes and I’ll get it done at 80K

 

[alexanderfoti]

Yes it is, that's only for the 7g plus.

The 7g non plus was once at 42k and that's it.

 

[Blobcat]

Yes it is, that's only for the 7g plus.

The 7g non plus was once at 42k and that's it.

So would you change a 7G ATF every 40k?

 

[Carmatt]

7G+?!?
Can it be wrong to change any fluids on a regular basis, whether MB say it’s needed or not?

 

[alexanderfoti]

So would you change a 7G ATF every 40k?

I would yes, depending on usage scenario.

 

[alexanderfoti]

7G+?!?
Can it be wrong to change any fluids on a regular basis, whether MB say it’s needed or not?

All vehicles with stop start have the 7G +, they take a different fluid spec. Some cars without stop/start have the 7g+ too, but its the easiest way to identify.

 

[Srdl]

So what are the recommendations for the 9G box? Just so I know for the future!

 

[alexanderfoti]

For 9G, every 31,000 miles or 3 years.

 

[Srdl]

For 9G, every 31,000 miles or 3 years.

Thank you

 

[Blobcat]

For 9G, every 31,000 miles or 3 years.

I did 48k in 18 months in my W213 with the 9G box and I’m fairly sure it never had an ATF change...