Transmission shifts up extra gear in manual mode
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Member
Joined: Mar 2016
Posts: 192
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AMG GT S
Transmission shifts up extra gear in manual mode
2016 AMG gt s
in sport plus manual mode. When I use the paddles to shift up sometimes it jumps an extra gear.
so 1 to 3 and 2 to 4 instead of 1 to 2 and 2 to 3
any thoughts on this?
in sport plus manual mode. When I use the paddles to shift up sometimes it jumps an extra gear.
so 1 to 3 and 2 to 4 instead of 1 to 2 and 2 to 3
any thoughts on this?
Out Of Control!!
Joined: Nov 2018
Posts: 11,399
Likes: 5,324
From: San Francisco Bay Area
2019 C63CS
First off, are you in permanent manual mode or temporary manual mode? If you don't know what the difference is, temporary manual mode is entered if you just start using the paddles. Permanent manual mode is entered if you press the M button in the center console.
In temporary manual mode the transmission still automatically upshifts near redline, so if you are winding it out and then try to shift manually you may catch it late and it registers your manual upshift as a second upshift, after it did the automatic upshift already.
If you are in permanent manual mode and this happens, then you may have a worn out shift paddle, which does happen. This can cause the switch to bounce and making contact multiple times making the transmission think you pressed it twice in rapid succession.
In temporary manual mode the transmission still automatically upshifts near redline, so if you are winding it out and then try to shift manually you may catch it late and it registers your manual upshift as a second upshift, after it did the automatic upshift already.
If you are in permanent manual mode and this happens, then you may have a worn out shift paddle, which does happen. This can cause the switch to bounce and making contact multiple times making the transmission think you pressed it twice in rapid succession.
MBWorld Fanatic!
Joined: Dec 2007
Posts: 1,310
Likes: 8
From: Denver, CO
Formula Mazda, Beast Junior...400HP 135i
First off, are you in permanent manual mode or temporary manual mode? If you don't know what the difference is, temporary manual mode is entered if you just start using the paddles. Permanent manual mode is entered if you press the M button in the center console.
In temporary manual mode the transmission still automatically upshifts near redline, so if you are winding it out and then try to shift manually you may catch it late and it registers your manual upshift as a second upshift, after it did the automatic upshift already.
If you are in permanent manual mode and this happens, then you may have a worn out shift paddle, which does happen. This can cause the switch to bounce and making contact multiple times making the transmission think you pressed it twice in rapid succession.
In temporary manual mode the transmission still automatically upshifts near redline, so if you are winding it out and then try to shift manually you may catch it late and it registers your manual upshift as a second upshift, after it did the automatic upshift already.
If you are in permanent manual mode and this happens, then you may have a worn out shift paddle, which does happen. This can cause the switch to bounce and making contact multiple times making the transmission think you pressed it twice in rapid succession.
MBWorld Fanatic!
Joined: Dec 2007
Posts: 1,310
Likes: 8
From: Denver, CO
Formula Mazda, Beast Junior...400HP 135i
Check these out. I can't recommend the JQ Werks magnetic paddles more highly. I have not used them in the GT R but I have used them in Porsche/Audi applications and they are fantastic. They shouldn't be hard for you to fit yourself. You should email them for the correct ones for your car if you decide to go that route.
https://jqwerks.com/collections/mercedes-benz
Senior Member
Joined: Jan 2022
Posts: 283
Likes: 116
From: Canyon Country, CA USA
2018 Mercedes-AMG GT R Evo
When in manual mode I noticed that the dash will indicate the gear and suggest that you upshift, ie, like the old upshift light used in cars back in the 80's. Don't know if your car has that but my 2018 GT R does.
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Junior Member
Joined: Nov 2019
Posts: 55
Likes: 15
From: Buda TX
GTS, GLE63S, G55
My car has the exact same problem. I've deduced it to be mechanical switch bounce as superswiss mentioned. The mating contacts on the switch are getting worn out and are subject to variations in temp / humidity, that's why you are seeing it happen at different rates. They should have used optical switches for the paddles 
-foooo
-foooo
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