SLR/C199/R199/Z199: Transmission shifts HARD
Thread Starter
Junior Member
Joined: Oct 2008
Posts: 53
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From: Heaven
2008 SLR
Transmission shifts HARD
Is it normal for the transmission to shift so hard at wide open throttle in manual mode? I also noticed that it has the ability to rev very high in manual mode as well. I couldn't find the rev limiter.....any suggestions?
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From: Miami, FL
Lotus Elise SLK55
Member
Joined: Jun 2007
Posts: 192
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From: IL.
ML320cdi, F250dsl.
In manual mode the shifts are very hard. Also there is no safety settings in manual mode so be very careful. It will let you shift into any gear at any rpm. It is possible to over rev the motor if you down shift into to low of a gear so be carefull.
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AMG
sometimes, doing the pedal ECU reset trick, will help smoothen the tranny shifts sometimes.
There are other mods you can do like lightweight crank pulley which help smoothen shifts but most SLR owners don't really mod their cars so thats understandable.
I will say though that I recently put Royal Purple in my engine & differential and surprisingly my tranny shifts much smoother now I don't know if that will help a bit but it might and plus it won't void warranty so its worth a shot.
There are other mods you can do like lightweight crank pulley which help smoothen shifts but most SLR owners don't really mod their cars so thats understandable.
I will say though that I recently put Royal Purple in my engine & differential and surprisingly my tranny shifts much smoother now I don't know if that will help a bit but it might and plus it won't void warranty so its worth a shot.
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Joined: Apr 2007
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300E a couple 1994 w124wagon E320 Wagon/,1971MGB Track/Rally, MG Midget Autocross ,2000 E320 wagon.
Please
Royal Purple?
It is not spec,it is not approved and you are suggesting someone with an 08 put it in and it won't void his warranty?
Where do you come up with this stuff?
Don't go bringing up the O'keefe act
For you have not read it if you think it pertains to royal purple.Call Royal Purple they will say use
MB spec fluids
From Mercedes Benz On Oil Related Failures
The MMS history should be accessed via SDS. The MMS history read out should be used to confirm the
maintenance history of the vehicle. If the MMS history read out shows that the vehicle was improperly
maintained, i.e., the maintenance intervals were materially overdrawn; and in addition, if the review of all
the customer's service records indicate that at the time of the subject oil change, engine oils not
approved at the time the change was made were used, the vehicle is not covered by the Mercedes-Benz
Limited Warranty. Additionally, the O'Keefe Class Action Settlement Service Commitment applies only
where the oil used was one that was approved at the time of the oil change. Further, please note that
under the O'Keefe settlement (1) there will be no coverage where there is evidence of vehicle abuse or
neglect in failing to properly maintain the vehicle according to MBUSA's recommendations including the
recommended service schedule
In other words you need not use Mobil1 but you better be using an mb spec oil or fluid in your warrantied engine ,transmission or differential.Unless you like a big fat denied on your service request.
Maybe you like to gamble,I don't think the op with the 08 needs to risk it.
OP ,Go have your trans software program checked for recent updates and proper shift points.
It is not spec,it is not approved and you are suggesting someone with an 08 put it in and it won't void his warranty?
Where do you come up with this stuff?
Don't go bringing up the O'keefe act
For you have not read it if you think it pertains to royal purple.Call Royal Purple they will say use
MB spec fluids
From Mercedes Benz On Oil Related Failures
The MMS history should be accessed via SDS. The MMS history read out should be used to confirm the
maintenance history of the vehicle. If the MMS history read out shows that the vehicle was improperly
maintained, i.e., the maintenance intervals were materially overdrawn; and in addition, if the review of all
the customer's service records indicate that at the time of the subject oil change, engine oils not
approved at the time the change was made were used, the vehicle is not covered by the Mercedes-Benz
Limited Warranty. Additionally, the O'Keefe Class Action Settlement Service Commitment applies only
where the oil used was one that was approved at the time of the oil change. Further, please note that
under the O'Keefe settlement (1) there will be no coverage where there is evidence of vehicle abuse or
neglect in failing to properly maintain the vehicle according to MBUSA's recommendations including the
recommended service schedule
In other words you need not use Mobil1 but you better be using an mb spec oil or fluid in your warrantied engine ,transmission or differential.Unless you like a big fat denied on your service request.
Maybe you like to gamble,I don't think the op with the 08 needs to risk it.
OP ,Go have your trans software program checked for recent updates and proper shift points.
Thread Starter
Junior Member
Joined: Oct 2008
Posts: 53
Likes: 0
From: Heaven
2008 SLR
sometimes, doing the pedal ECU reset trick, will help smoothen the tranny shifts sometimes.
There are other mods you can do like lightweight crank pulley which help smoothen shifts but most SLR owners don't really mod their cars so thats understandable.
I will say though that I recently put Royal Purple in my engine & differential and surprisingly my tranny shifts much smoother now I don't know if that will help a bit but it might and plus it won't void warranty so its worth a shot.
There are other mods you can do like lightweight crank pulley which help smoothen shifts but most SLR owners don't really mod their cars so thats understandable.
I will say though that I recently put Royal Purple in my engine & differential and surprisingly my tranny shifts much smoother now I don't know if that will help a bit but it might and plus it won't void warranty so its worth a shot.
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Senior Member
Joined: Mar 2003
Posts: 328
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From: virginia beach
clk 500 (wifey's); 350Z roadster (daily driver); 350Z coupe (track car)
The faster the shifts, the "harder" they feel, particularly the downshifts. After I had the valvebody upgraded on my 350Z, the shifts were really fast but almost violent sometimes. Not trying to compare both cars, but the principles are the same.
So in summary, it's a "good" thing
So in summary, it's a "good" thing
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Super Member
Joined: Jan 2007
Posts: 846
Likes: 1
From: da long island
1989 Toyota Tercel Coupé
not with my car, in m mode it will downshift if the revs get too low. it will bounce off the rev limiter if they get too high, you cant over rev it by downshifting though
Member
Joined: Jan 2008
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I can't afford
If it is setup like the SMG in BMW's it will. I will not drive it and attempt to prove you right or wrong, so someone with better knowledge chime in.
Super Member
Joined: Jan 2007
Posts: 846
Likes: 1
From: da long island
1989 Toyota Tercel Coupé
when i first got my car, it bounced off the rev limiter. last time it was in for service they must have updated the software, now it shifts up automatically after getting really close to redline. it shifts down too.
Almost a Member!
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Posts: 39
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'09 SL65 BS, '08 SL65 AMG, '08 CLK63 AMG BS, '08 CL65 AMG, '06 Viper SRT10, '06 F430, '04 Gallardo
that's a shame, but i can understand why people wouldn't like to drive their cars hard. i'm different though because i drive the **** out of my cars since I believe that's how they are meant to be driven, otherwise I wouldn't buy them. I mostly do it at tracks though. However, i do take my 430 spider for a nice easy cruise with the top down once in a while. I was considering an SLR for a while but when i took it for a test drive, I didn't enjoy it as much as I was hoping to. Still an amazing car no doubt, but for half a mill, I wasn't too happy about certain things in the interior so I just decided not to get it.
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I can't afford
SLR? if not I belive the SLR has a different tranny setup then the rest of the AMG's.
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Joined: Feb 2007
Posts: 449
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From: Florida, Tampa
1993 190E 2.6
The viscosity, detergents, and other key elements will work with or against your engine and transmission. If you use the wrong one, it will work against it.
