GLS Class (X166) Produced from 2016 to 2019

2017 GLS 450 Service b

Old Nov 24, 2023 | 04:00 PM
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2017 gls 450
2017 GLS 450 Service b

I recently purchased a 2017 GLS 450 with 80,000 miles service be is coming up and I want to perform this service myself.I’m looking for recommendations For grade of Synthetic oil I should use as well as filters brands. Air engine, oil and cabin filters.


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Old Nov 24, 2023 | 09:52 PM
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GLS450
Welcome and congrats on your purchase!

I have always went with either Mobile 1/Motul/Liqui Moly depending on which car I'm changing. For my GLS450 I went with this kit for oil and filter https://www.fcpeuro.com/products/mer...61800009-7l-ml

You can get OEM brand Kengst or Mahle for air filter. https://www.fcpeuro.com/products/mer...gst-2760940504

For you cabin filters you can get Kengst or Genuine Mercedes which provides you with all 3 filters for cabin filters. https://www.fcpeuro.com/products/mer...des-2928300000



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Old Nov 25, 2023 | 12:40 AM
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2017 gls 450
Thank you very much for the recommendations and adding the links!
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Old Nov 28, 2023 | 09:50 PM
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2013 GL450
Hi,

I recently purchased a 2017 GLS 450 as well and it has 70k miles. I need a service B and my local dealer is charging me $800 for this service. Given that the car has had service up to 64k miles at MB dealer throughout its life should I just bite the bullet?
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Old Nov 29, 2023 | 12:25 PM
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MB GL450
I just did the B service on my 2015 GL 450. I bought everything from FCP euro. For oil change I did the following (this is what another member did and posted and sounded pretty good)liqui moly pro-line engine flush 2 cans. Run engine for 5 mins to flush. Then drain

Replace oil with liqui moly leichtlauf 5w40

Add Liqui moly MoS2 Anti Friction Engine treatment 2 cans

Add liqui moly Pro Line Fuel System Clener to gas tank

Next Fill up add DI Jectron Fuel Injector Cleaner

In addition B service calls for brake fluid flush which I did. (I bought a machine)
My car was also due for engine air filters so those were included in the cost above along with cabin air filters
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Old Nov 30, 2023 | 08:01 PM
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From: New Hampsha
'17 GLS450, '14 GLK250, Grandpa's Roadster
Your automatic transmission fluid change is due right around that 70-80,000 mile mark. If it hasn't already been done, that adds a level of difficulty to the DIY project...
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Old Dec 4, 2023 | 02:35 PM
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2017 gls 450
Service B message reset

I just Completed Service B, which was pretty straightforward thanks to the older help from this forum. However, I’m having trouble accessing other menu with the assist plus’s menu. I believe I am following the instructions to a T, and still I cannot gain access.

After I press the start stop button once with foot off the brake
On the old odometer screen
I’m pressing the answer phone button for one second
Then, within a second, I am pressing and holding the OK button for five seconds
The screen t changes to reset trip odometer and nothing but nothing else.
Any thoughts or experiences with this issue?
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