S-Class (W140) 1991-1999: 300 SD, S 350TD, 300 SE 2.8, S280, 300 SE 3.2, 300 SEL 3.2, S320, S320L, 400 SE, S420, 400 SEL, S420L, 500 SE, S500, 500 SEL, S500L, 600 SE, S600, 600 SEL, S600L, 500 SEC, 600 SEC

S Class transmission problem

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Old Jun 22, 2010 | 09:31 PM
  #1  
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1994 S500
S Class transmission problem

I have a 1994 S500. Recently, the transmission will not shift out of 1st or 2nd gear when first started in the morning. After a mile or so it starts working fine and is great for the rest of the day. Fluid is full, pink, and clear. Any ideas?
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Old Jun 22, 2010 | 10:16 PM
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'95 S500C, '96 C36, '86 190E, '72 280SEL
It is designed to do that until the engine warms up.
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Old Jun 23, 2010 | 09:18 AM
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pink?

Pink sound like coolant mixing with ATF.Rotten trans cooler.Any car over 10 years old should remove stock cooler,and install aftermarket cooler.
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Old Jun 23, 2010 | 05:11 PM
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Originally Posted by stox
It is designed to do that until the engine warms up.
Say what?
I think not.
Once you turn the engine on, it should be ready to roll!
Even in frozen Alaska!
If not, then you obviously have a transmission problem; low fluid which means a leak, clutches/gears are worn, etc. could be sensors, could be....
you need a transmission tech to diagnosis the problem.
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Old Jun 25, 2010 | 01:11 AM
  #5  
barry S320V's Avatar
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STOX knows what he is talking about. The rest of you read your manuals.
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Old Jul 7, 2010 | 03:12 PM
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2011 E350 Bluetec, 1996 S320 & 2006 E320 CDI Sold to my son & 2017 GMC 2500 Diesel Pick up
Originally Posted by barry S320V
STOX knows what he is talking about. The rest of you read your manuals.
Ditto LOL
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Old Jul 7, 2010 | 03:20 PM
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Originally Posted by stox
It is designed to do that until the engine warms up.
yeah.... its supposed to be that way, unless you go pedal to the metal right off the bat, which i would say is a bad idea... something is bound to break that way sooner or later.
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Old Jul 7, 2010 | 03:21 PM
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99' SL500, 16' i3, 14' Passat TDI SEL
Oh and take the transmission off of 'S' mode... it will start off from 1st gear instead of 2nd, and im sure thats not that comfortable in the morning either. your car is supposed to be a cruiser, not a speed boat.
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Old Jul 7, 2010 | 03:23 PM
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s320
w126 cold transmission

Well on my w126 diesel it hates the cold,it takes 2 miles before warm.
Now my 99 S320 its ready to go,any time,and shift right.
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Old Jul 7, 2010 | 06:49 PM
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I spoke with the "main man" transmission tech at the MB dealership today and I also went in person and spoke with three shops who specialize in MB transmissions....
I showed them the responses on this site...re: fluid needing to warm up, etc....
I am told...does not need to. If the fluid needs to warm up...transmission problem. When the car was new...it did not need to warm up...when the original owner first took the car out for a test drive...it did not need to warm up...when the owner had the car for a few months and has been driving it daily...it did not need to warm up....(on my 92 SEL which I have had for many many many many years....in Alaska, Montana or Minnesota in the frozen winter....car starts right up and drives/shifts with no problems) I have had 13 Benz's over the years and never had one that needed to warm up before driving off. Maybe it is a characteristic of your particular car or even a few others....but I do not not believe that any car maker builds a car that has to wait till it warms up before the tranny shifts!
If that is the case...it is a transmission problem...or about to become a tranny problem.
I have as do you, many friends who own Benz's..and they don't have to wait for the transmission to warm up before driving off.
What problem? Could be fluid, steel, gears, filter, sensors, etc....but when you start the car and shift into gear...it should move immediately.
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Old Jul 7, 2010 | 09:56 PM
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Alright. well take the car to your main man and pay him a rediculous amount of money to fix a problem that doesnt matter.

My s320 has been this way since 1997, which coincidentally is the year it was first sold.
My CLK55 which is unfriendly to me for the first 2-3 miles untill it heats up, then it revs to wherever i want it, whenever and the transmission was fine. Although it is prone to visiting the stealership more than being parked in the garage.

My mom had an M5 that had warning lights suggesting keeping the revs down untill it...wait for it..wait for it...Heated up. but what does BMW know?

My 1997 s600 tries to stay in 1st and 2nd gear when its cold in the mornings. Maybe i should take it to your mechanic and have him replace a non-broken relay or something.

Take it from me. its normal. honest. you dont even have to pay me for it.
but hey, ill buy your 'broken' car from you for bottom dollar if you really need to get rid of the car because of this issue.
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Old Jul 10, 2010 | 10:20 AM
  #12  
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In cold starts, the ECU is programmed to prolong 1st and 2nd gear to warm up the catalytic converter quickly to reduce emissions.
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Old Jul 10, 2010 | 09:23 PM
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A better description of "will not shift out of 1st or 2nd gear" could help to end this chaos and mayhem. For example, if it doesn't ever shift out of first gear how would you know it doesn't shift out of second gear?
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Old Jul 10, 2010 | 10:02 PM
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Originally Posted by deanyel
A better description of "will not shift out of 1st or 2nd gear" could help to end this chaos and mayhem. For example, if it doesn't ever shift out of first gear how would you know it doesn't shift out of second gear?
You are right! Let's end this chaos and mayhem!
All I know is this and it's simple enough that even an elementary school student can understand......
you go ahead and test drive or buy a new Benz in Alaska, Canada, Europe, Minnesota in the dead of winter when it's 10 below or more....you get into that Benz, start it up and IMMEDIATELY put it into gear, it WILL move!
I've got a 19 year old 500 SEL that I have driven in Anchorage when it was 20 below zero...(active duty military stationed for 2 years in Alaska) and not once did the car not move when started and immediately shift into gear after sitting overnight or 2/3/4 days in a row sitting. And the same with my 2005 CL55 AMG....starts right up and when I put it into gear...it moves immediately when it 20 below or 90 plus.
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Old Jul 11, 2010 | 08:58 AM
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Thanks for that but it doesn't shed any light on whether the original poster is talking about a delay in the shift, which would be normal, or a non-shift, which would not.
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Old Jul 21, 2010 | 07:17 PM
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My W140 delay a bit when I first start the car. I mean delay from first gear to second. It hits 3000rpm before changing the gear. Once the car is warm, it shift around 2500rpm. But today my mechanic told me that the transm. slip.
It will last until it last... maybe 6 months to 1 year... Cost to rebuild $2200 !!! Anybody have rebuid this transm before ? how much cost approx ?
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Old Jul 22, 2010 | 12:10 AM
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BENICA: you have a different model car, older. The newer cars are completely different than yours. You are giving bad advice.
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Old Aug 19, 2010 | 03:20 PM
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Originally Posted by CharlyE500
My W140 delay a bit when I first start the car. I mean delay from first gear to second. It hits 3000rpm before changing the gear. Once the car is warm, it shift around 2500rpm. But today my mechanic told me that the transm. slip.
It will last until it last... maybe 6 months to 1 year... Cost to rebuild $2200 !!! Anybody have rebuid this transm before ? how much cost approx ?
All automatic transmissions are expensive to rebuild. My Chrysler Minivan was a hair under $2000.
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Old Aug 20, 2010 | 05:42 PM
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Originally Posted by benica
Say what?
I think not.
Once you turn the engine on, it should be ready to roll!
Even in frozen Alaska!
If not, then you obviously have a transmission problem; low fluid which means a leak, clutches/gears are worn, etc. could be sensors, could be....
you need a transmission tech to diagnosis the problem.
You are entirely 100% wrong. When I return to work on Monday, I will forward you the function description as to why the trans is held in first-second gear when cold. It has nothing to do with warming up the trans...see below. And trust me, I have driven way more MB's than you could imagine...I think I know what they feel like.

Originally Posted by V9.
In cold starts, the ECU is programmed to prolong 1st and 2nd gear to warm up the catalytic converter quickly to reduce emissions.
This is the correct reason, and only reason the trans is held in gear.

Originally Posted by Vasir
Oh and take the transmission off of 'S' mode... it will start off from 1st gear instead of 2nd...
The OP's trans does not have a "S" - "W" or "S" - "C" switch, that was not introduce till the ESM came out with the 722.6 trans.

Last edited by MBtech1098; Aug 20, 2010 at 05:47 PM.
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Old Aug 20, 2010 | 05:45 PM
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Originally Posted by Rockerdad
I have a 1994 S500. Recently, the transmission will not shift out of 1st or 2nd gear when first started in the morning. After a mile or so it starts working fine and is great for the rest of the day. Fluid is full, pink, and clear. Any ideas?
Are you sure this is a recent problem that you have not noticed before? I would recommend letting an experienced MB tech drive your car to determine if it is abnormal.
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Old Aug 21, 2010 | 11:46 AM
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I had that problem then cleaned airflow sensor and it quit.
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