2007 S550 Tranny Problem
05-05-2010, 04:41 AM
#1
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2007 S550
2007 S550 Tranny Problem
I noticed lately that the transmittion will lag behind while decelerating. It stays in a higher gear than it is supposed to. This makes the RPM runs higher at low speed sometimes and then it releases with a noticable jerkking. This only happens in low speeds between 3rd to 2nd gear. I tried once flooring it in a highway and going really fast hopping that may clears it but it didn't. Did any one come a cross such a problem?
I need help
I need help
05-05-2010, 06:40 AM
#2
I see the same issue...had to dealer but was told "normal operation"....doesn't sound right to me. I also notice it more in "S" mode vs. "C" mode.....really doesn't feel right....upon releasing the accelerator, the tranny should upshift and not slow the car down. Sure would like to learn of a fix.
05-05-2010, 10:02 AM
#3
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That is a feature of the S mode. It is supposed to hold the gear longer in order to decelerate and be ready for when you get back on the gas. C mode is far more conservative- try that and see if it is better....
05-05-2010, 11:01 AM
#4
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You may not have realized it but on the back side of the steering wheel of the 2007-2009 S550 are little "switches" that you can use to shift the gears up or down. Holding the up/down selector for a second or so will make the car select the right gear, for example on the hwy if you want to accelerate just hold in the left switch for a second and give it some gas, the car will automatically select the right gear sometimes going straight from 6th to 4th. I upgraded to the AMG steering wheel with the large aluminum flappy paddles, and it has become second nature to just blip the gear selection or hold it in for a second when I want precise control.
So to answer your particular question try holding in the right gear selection switch for a second when de-celerating.
So to answer your particular question try holding in the right gear selection switch for a second when de-celerating.
Last edited by irieblue; 05-05-2010 at 11:03 AM.
05-05-2010, 03:34 PM
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2007 S550
You may not have realized it but on the back side of the steering wheel of the 2007-2009 S550 are little "switches" that you can use to shift the gears up or down. Holding the up/down selector for a second or so will make the car select the right gear, for example on the hwy if you want to accelerate just hold in the left switch for a second and give it some gas, the car will automatically select the right gear sometimes going straight from 6th to 4th. I upgraded to the AMG steering wheel with the large aluminum flappy paddles, and it has become second nature to just blip the gear selection or hold it in for a second when I want precise control.
So to answer your particular question try holding in the right gear selection switch for a second when de-celerating.
So to answer your particular question try holding in the right gear selection switch for a second when de-celerating.
05-05-2010, 06:20 PM
#6
MBWorld Fanatic!
You may not have realized it but on the back side of the steering wheel of the 2007-2009 S550 are little "switches" that you can use to shift the gears up or down. Holding the up/down selector for a second or so will make the car select the right gear, for example on the hwy if you want to accelerate just hold in the left switch for a second and give it some gas, the car will automatically select the right gear sometimes going straight from 6th to 4th. I upgraded to the AMG steering wheel with the large aluminum flappy paddles, and it has become second nature to just blip the gear selection or hold it in for a second when I want precise control.
So to answer your particular question try holding in the right gear selection switch for a second when de-celerating.
So to answer your particular question try holding in the right gear selection switch for a second when de-celerating.
05-06-2010, 07:37 AM
#7
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2007 S550
The car will automatically select the right gear if you nail the gas. By playing the switches you, if anything, will stop the car from making the ideal shifts. I frankly wish those switches could be deactivated. They are of no real world use and I sometimes accidentally hit them when making a sharp turn- which is then followed by me trying to figure out why the engine is racing...
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05-06-2010, 04:56 PM
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Mercedes-Benz, BMW, Porsche, Aston Martin, Chevrolet
05-06-2010, 07:13 PM
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Request dealer pull VMI (vehicle master inquiry) this will show maintenance performed with any MB dealer and will confirm if all recall and/or service campaign work was completed. For transmission, reference bulletins S-B-27.60/61j NOV08 mechanical cause(s) and P-B-27.60/69a JUL08 (VIN range A000355 to A016837) software.
05-07-2010, 11:57 AM
#10
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Request dealer pull VMI (vehicle master inquiry) this will show maintenance performed with any MB dealer and will confirm if all recall and/or service campaign work was completed. For transmission, reference bulletins S-B-27.60/61j NOV08 mechanical cause(s) and P-B-27.60/69a JUL08 (VIN range A000355 to A016837) software.
05-09-2010, 03:29 PM
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2007 S550
Request dealer pull VMI (vehicle master inquiry) this will show maintenance performed with any MB dealer and will confirm if all recall and/or service campaign work was completed. For transmission, reference bulletins S-B-27.60/61j NOV08 mechanical cause(s) and P-B-27.60/69a JUL08 (VIN range A000355 to A016837) software.
05-15-2010, 06:28 PM
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2007 S 600 / '06 911 Porsche C4S cab
yes, I've had a similar issue on my '07 S 600. Only in the "C" mode, and especially with cold starts. Accelerate from a stop and there is a jerking from 2n'd to 3rd. Sometime accompanied by a little screech or chirp. Not normal, yet the dealer finds nothing wrong. Weird.
05-18-2010, 01:48 PM
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2006 CLK 350
Hope I'm not taking your thread with a different situation, but it sounds similar to what my CLK 350 just did. Basically it forgot to shift down, but then it went into neutral.
Coming down from about an easy 40mph to almost a stop and then go - it revved up high - about two grand - with very little forward progress, felt like it was slipping. The I did stop and it wouldn't go at all no matter how much gas, just lots of rev. I figured the computer had lost its place so I turned it off and back on - ran great and still does.
Same problem or something different?
Coming down from about an easy 40mph to almost a stop and then go - it revved up high - about two grand - with very little forward progress, felt like it was slipping. The I did stop and it wouldn't go at all no matter how much gas, just lots of rev. I figured the computer had lost its place so I turned it off and back on - ran great and still does.
Same problem or something different?
05-19-2010, 05:25 AM
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2007 S550
Request dealer pull VMI (vehicle master inquiry) this will show maintenance performed with any MB dealer and will confirm if all recall and/or service campaign work was completed. For transmission, reference bulletins S-B-27.60/61j NOV08 mechanical cause(s) and P-B-27.60/69a JUL08 (VIN range A000355 to A016837) software.
