2nd time transmission valve body replacement
Thread Starter
Member
Joined: Jan 2005
Posts: 183
Likes: 4
From: Portland, OR
S550 , S430
2nd time transmission valve body replacement
I have 08 S550 (W221) and been experiencing rough shift at cold start.
by "cold start", I mean = vehicle moves off for the first time after being parked overnight.
approx 6 month ago, the dealer installed a new valve body (2202702706)
then problem came back.
Updating transmission & motor software did not solve the issue.
Then, the shop foreman determined that I have an INCORRECT valve body.
WHOA!?!?!, I was like wtf!?!? They themselves installed the alleged incorrect valve body .... Anyway, I decided to not pursue why , I focused more on lets get the RIGHT one now)
Now I have a newer valve body 220270320688
so based on:
DTB S-B-27.19/118a JUN10 – MY-All, Transmission 722.9 in Models 164, 171, 203, 204, 207, 209, 211, 212, 215, 216, 219, 220, 221, 230, 251, 463 ordering notes for Electrohydraulic Control Unit
Control unit 2202701406
replaced by 2202701306 then
replaced by 2202702706 then again
replaced by 2202703206-88
let's see if this is THE one now ....
by "cold start", I mean = vehicle moves off for the first time after being parked overnight.
approx 6 month ago, the dealer installed a new valve body (2202702706)
then problem came back.
Updating transmission & motor software did not solve the issue.
Then, the shop foreman determined that I have an INCORRECT valve body.
WHOA!?!?!, I was like wtf!?!? They themselves installed the alleged incorrect valve body .... Anyway, I decided to not pursue why , I focused more on lets get the RIGHT one now)
Now I have a newer valve body 220270320688
so based on:
DTB S-B-27.19/118a JUN10 – MY-All, Transmission 722.9 in Models 164, 171, 203, 204, 207, 209, 211, 212, 215, 216, 219, 220, 221, 230, 251, 463 ordering notes for Electrohydraulic Control Unit
Control unit 2202701406
replaced by 2202701306 then
replaced by 2202702706 then again
replaced by 2202703206-88
let's see if this is THE one now ....
Last edited by MBS430; Aug 5, 2011 at 05:31 PM. Reason: clarify cold start
Thread Starter
Member
Joined: Jan 2005
Posts: 183
Likes: 4
From: Portland, OR
S550 , S430
thanks M5!
just to clarify "cold start" = I meant, the first gear shift after ~ 6 hr of being parked. Usually in the morning after being parked overnight.
I don't think the issue is temperature related. I would speculate it was more due to ~6 hr being parked and the ATF is "somehow leaked" from the transmission's plate pressure
here is copy paste from service bulletin:
LI27.00-P-048552
Complaint: after a cold start, slippage may occur in in the 2-3 shift when vehicle moves off for the first time
Cause:
Basic charge for the K1 piston is not guaranteed with a cold start. The plate pressure still has to be built up. This can cause the shift operation to be slip once.
Remedy:
Topis is known. A software improvement is being produces.
just to clarify "cold start" = I meant, the first gear shift after ~ 6 hr of being parked. Usually in the morning after being parked overnight.
I don't think the issue is temperature related. I would speculate it was more due to ~6 hr being parked and the ATF is "somehow leaked" from the transmission's plate pressure
here is copy paste from service bulletin:
LI27.00-P-048552
Complaint: after a cold start, slippage may occur in in the 2-3 shift when vehicle moves off for the first time
Cause:
Basic charge for the K1 piston is not guaranteed with a cold start. The plate pressure still has to be built up. This can cause the shift operation to be slip once.
Remedy:
Topis is known. A software improvement is being produces.
Thread Starter
Member
Joined: Jan 2005
Posts: 183
Likes: 4
From: Portland, OR
S550 , S430
Trending Topics
MBWorld Fanatic!
Joined: Dec 2002
Posts: 1,398
Likes: 7
I have a 7G transmission in a W204 C Class - it did this from new, the first cold 2-3 shift holds the engine RPMs a little higher before engaging. After that, it doesn't occur again. Don't waste your time/money trying to get it fixed, unless the jolt is violent and severe. I have 60K miles now and the transmission is running fine even in the presence of this anomaly. You shouldn't be accelerating hard during the first 50 feet driving off on a cold engine anyway, a gentle pull away lessens the "jolt" of this first shift.
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MBWorld Fanatic!
Joined: Sep 2009
Posts: 2,108
Likes: 7
From: Dix Hills, New York
2012 C250 Coupe
thanks M5!
just to clarify "cold start" = I meant, the first gear shift after ~ 6 hr of being parked. Usually in the morning after being parked overnight.
I don't think the issue is temperature related. I would speculate it was more due to ~6 hr being parked and the ATF is "somehow leaked" from the transmission's plate pressure
here is copy paste from service bulletin:
LI27.00-P-048552
Complaint: after a cold start, slippage may occur in in the 2-3 shift when vehicle moves off for the first time
Cause:
Basic charge for the K1 piston is not guaranteed with a cold start. The plate pressure still has to be built up. This can cause the shift operation to be slip once.
Remedy:
Topis is known. A software improvement is being produces.
just to clarify "cold start" = I meant, the first gear shift after ~ 6 hr of being parked. Usually in the morning after being parked overnight.
I don't think the issue is temperature related. I would speculate it was more due to ~6 hr being parked and the ATF is "somehow leaked" from the transmission's plate pressure
here is copy paste from service bulletin:
LI27.00-P-048552
Complaint: after a cold start, slippage may occur in in the 2-3 shift when vehicle moves off for the first time
Cause:
Basic charge for the K1 piston is not guaranteed with a cold start. The plate pressure still has to be built up. This can cause the shift operation to be slip once.
Remedy:
Topis is known. A software improvement is being produces.
Member
Joined: Feb 2010
Posts: 90
Likes: 3
From: Houston, Texas
S550
I just replaced my conductor plate inside the valve body. Spent about $1500 at the Mercedes dealership. I've got my car back for about one month..., still drive kinda rough sometimes.... Seems like lots of people has transmission issue...
Out Of Control!!
Joined: Jul 2003
Posts: 15,901
Likes: 4,630
From: North Scottsdale, AZ
'71 Pinto
Repair is covered for 12 months/unlimited mileage bring it back, speak with the Service Manager and request MB rep covering dealership oversee/moniter case.
Member
Joined: Feb 2010
Posts: 90
Likes: 3
From: Houston, Texas
S550
2007, 2202701306, 2nd, benzworld, bodies, body, mbworld, mercedes, replacement, replcementvalve, s550, transimition, transmission, valve, vavle, w221
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