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post #1 of 11 (permalink) Old 03-01-2019, 11:50 AM Thread Starter
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Strange sound

Hello.

Last few days I started hearing strange sound from the left side (driver's side). It is happening when the engine is cold and when I turn the steering wheel left or right. When I put in P position, it goes away. It only lasts for first 2-3 mins. Here is a video, with a same sound, I found online:
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post #2 of 11 (permalink) Old 03-01-2019, 11:52 PM
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I think you should first check cv joints. then shock mounts.
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post #3 of 11 (permalink) Old 03-02-2019, 01:17 AM Thread Starter
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Originally Posted by pablo_can View Post
I think you should first check cv joints. then shock mounts.
I have changed left cv joint 10k kms ago. But It is a cheap ITN cv joint.
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post #4 of 11 (permalink) Old 03-02-2019, 06:45 AM
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The sound in the video is coming from the oil pump in the CVT, drawing air as well as oil.
Add half of liter of CVT fluid to the transmission.
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post #5 of 11 (permalink) Old 03-02-2019, 08:06 AM Thread Starter
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Originally Posted by forrera View Post
The sound in the video is coming from the oil pump in the CVT, drawing air as well as oil.
Add half of liter of CVT fluid to the transmission.
It is present only when engine is cold, after start, first 2 mins. When car is in P, everything is normal, without sound. Which oil to use, and where is hole for filling??
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post #6 of 11 (permalink) Old 03-02-2019, 01:43 PM
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These files should be useful.
Attached Files
File Type: pdf W169 WIS Filling automatic transmission with fluid.pdf (183.8 KB, 16 views)
File Type: pdf W169 WIS Oil pump component description.pdf (95.1 KB, 11 views)
File Type: pdf W169 WIS Remove_install automatic transmission oil pan.pdf (208.0 KB, 16 views)
File Type: pdf W169 WIS Pulley set component description.pdf (88.7 KB, 11 views)
File Type: pdf W169 WIS Remove_install oil pump up to 4-07.pdf (105.6 KB, 18 views)
File Type: pdf W169 WIS Remove_install oil pump from 4-07.pdf (245.5 KB, 16 views)
File Type: pdf W169 WIS Remove_install oil filler pipe for automatic transmission.pdf (132.9 KB, 16 views)
File Type: pdf W169 WIS Separate_connect transmission oil line.pdf (183.0 KB, 15 views)
File Type: pdf W169 WIS CVT transmission oil (ATF, specification 236.20.pdf (12.5 KB, 22 views)
File Type: pdf W169 WIS Check oil level in automatic transmission and correct if necessary CVT.pdf (146.0 KB, 20 views)
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post #7 of 11 (permalink) Old 03-02-2019, 06:18 PM Thread Starter
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Originally Posted by MB•David View Post
These files should be useful.
Thanks 😃
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post #8 of 11 (permalink) Old 03-28-2019, 02:56 PM Thread Starter
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Is it good to fill up CVT with Comma AQCVT fully synthetic oil?? Idk which oil is now in my CVT. Is it ok to add this comma oil ??
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post #9 of 11 (permalink) Old 03-28-2019, 03:30 PM
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There's a file above with full spec of MB CVT oils (236.20) - if this is not on the list, I'd stay clear.

Here's the MB branded one, in case you're looking:

https://www.ebay.co.uk/itm/Genuine-M...0/112799650834

David
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post #10 of 11 (permalink) Old 03-28-2019, 09:39 PM
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Is it good to fill up CVT with Comma AQCVT fully synthetic oil?? Idk which oil is now in my CVT. Is it ok to add this comma oil ??
Down load the BeVo app onto your phone or ipad, this has a full list of MB approved fluids.
Does the fluid comply with MB 236.20 for MB cvt oils, if it doesn’t say that or says similar to then move on.
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