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W220 Transimission problem
01-13-2018, 11:17 AM
Post: #1
W220 Transimission problem
Hello,i have shift nice all gears but when it reach gear no 4 goes into neutral(implausible) until u start the car again.
I get this fault
[Image: df83f4e472c12bc05e76ad1fd576d71a.jpg]

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01-13-2018, 03:19 PM
Post: #2
RE: W220 Transimission problem
722.6 or 722.9? It looks like it's slipping when it goes into 4th gear. Inspect fluid and make sure is not contaminated with metal or excessive clutch material. If it is you will need to remove trans and tear down for inspection. Also test drums for proper actuation. If it's a 722.6 and everything looks good as far as the drum, clutches and solenoid then suspect valvebody.
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 Thanks given by: bawarek
01-13-2018, 10:06 PM (This post was last modified: 01-13-2018 10:16 PM by benzcoupe.)
Post: #3
RE: W220 Transimission problem
if it was my car i would service the trans and if it was later one with no TC drain then remove one coler line at trans and run until clean fluid

also make sure trans module is not full of oil on the 5 speed trans anyway after that readapt shift program using DAS module will feel heavier lol and since the face upside down they dont self drain. Mb xlaimes its caused by eletroylsis and have offereed no cure just treatment LOL i drill a drain in the cover after cleaning PCB with brake wash only NO carb spray every mb tech has seen these modules fill with ATF if not they need to start looking now if its a NAG ive seen the piston inside trans break since most of these have had at least a valve body replacement so if it has 150k mi or more its probably internal and they are easy to Rand R and get soft part kit and watch you tube video also are you saying 4th gear works ok but when it doesnt u can get 4th gear by cycling the key and driving on until next episode? if so it sounds like electrical?software fault where rebooting car restores 4th and 5th? (etc) more ingo plz
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 Thanks given by: ivannzowa
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