Transmission fluid change DIY
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Newbie
Joined: Aug 2020
Posts: 2
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GLS 450
Transmission fluid change DIY
Hello. Following the forum for quite some time. I have a 2017 GLS 450 and I’m trying to look for tutorials on changing the transmission fluid and filter. All I can find on YouTube or forums is for the old 7 speed automatic transmission but non for the 9Gtronic. Any guidance is greatly appreciated.
Out Of Control!!
Joined: Sep 2018
Posts: 14,666
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From: unbegrenzt
2017 GLE350 4MATIC
Do you have WIS/EPC? It is approx $6 on ebay, maybe a few dollars more. It contains the procedure. In principle it will be similar to the 7G-Tronic. An important point about transmission fill, for most vehicles 15 years old or newer, is to fill via overflow at operating temperature. This is different than the old school engine oil change, which is a simple drain and refill.
Senior Member
Joined: Jun 2012
Posts: 409
Likes: 22
2008 GL320CDI (310k) & 2017 GLS450 (160k)
Hello. Following the forum for quite some time. I have a 2017 GLS 450 and I’m trying to look for tutorials on changing the transmission fluid and filter. All I can find on YouTube or forums is for the old 7 speed automatic transmission but non for the 9Gtronic. Any guidance is greatly appreciated.
Senior Member
Joined: Dec 2008
Posts: 378
Likes: 114
2015 S550, 2017 GLS450
The transmission filter/pan is disposable and easy to replace. The difficult part is dropping the 4MATIC cross brace which blocks access to the two rear bolts. It's akin to changing transmisson mounts. You need a jack or other device to support the weight before dropping the brace. Then you can drop the pan. There's a reason why this is not done frequently as DIY when compared to the prior 7-speed
Junior Member
Joined: May 2019
Posts: 51
Likes: 10
2018 GLS 550
MX booklet?
Sorry, searched for GLS 550 maintenance booklet with no results. I’d love to have something to reference on recommended Mx intervals besides my dealer. Can you post the link please?
Thanks,
Thanks,
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MBWorld Fanatic!
Joined: Jun 2021
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From: New Hampsha
'17 GLS450, '14 GLK250, Grandpa's Roadster
It was in the glove box with the operators manual when the car was new. I have a pdf version for the GLK, but I don't remember where I got it.
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MBWorld Fanatic!
Joined: Jun 2021
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From: New Hampsha
'17 GLS450, '14 GLK250, Grandpa's Roadster
Here is a link to a generic one: https://www.mbusa.com/en/owners/service-maintenance
I'd attach the one for my GLK, but the file is too big. PM me your email address and I'd be happy to forward it to you. I'm sorry but I don't remember how I acquired it. I don't have one for the GLS.
I'd attach the one for my GLK, but the file is too big. PM me your email address and I'd be happy to forward it to you. I'm sorry but I don't remember how I acquired it. I don't have one for the GLS.
MBWorld Fanatic!
Joined: Jun 2021
Posts: 1,919
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From: New Hampsha
'17 GLS450, '14 GLK250, Grandpa's Roadster
I think I got mine from the Canadian MB web site. I found the one for the 2018 GLS but it doesn't have the same information. Here it is:
