"Hard Shift" from 1st to 2nd gear on S65

poblon · 04-26-2012, 09:50 AM

In the mornings, I have a very hard shift on my 06 S65 or pop from 1st to 2nd gear. It lasts only for a few miles, then all is smooth again, but the shift is so hard, it almost knocks the coffee right out of your hand. Any ideas?

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mrbenzes · 04-27-2012, 08:34 AM

It may be time for a fluid/filter change for your transmission....all of that torque is there and a cold transmission isnt controlling it with old fluid.
How many miles are on your car?
Mike

poblon · 04-27-2012, 09:22 AM

75K miles, but I have had it serviced regularly...is trans fluid part of the normal maint provided?

mrbenzes · 04-27-2012, 09:28 AM

No, I think MB considers these transmissions as sealed units for life...what a joke. I think 60K miles is a good interval.
Dealer quoted me $400 to do a change on my S55...S65 will cost more.
Filter and fluid are about $100 - $120 for S55.
Mike

Stephen04E55 · 04-27-2012, 06:22 PM

S65, S600, and S55 have the same tranny so why should the S65 cost more? AMG speedshift BS doesn't add to the fluid capacity or a different pan/filter. I have an S65 now and have seriviced my '03 S600 which are exactly the same.

mrbenzes · 04-30-2012, 08:27 AM

Sorry, I thought the S65 had a 6 or 7 speed trany in 2006..mine has a 5-speed.
If they are the same you can do the whole tranny change for $150 in supplies if you DIY.
Mike

Becks Imports · 04-30-2012, 04:45 PM

Check the trans connector for leaks.

If it's leaking, oil travels up the harness into the conductor plate, causing weird shifting behavior, going into neutral all by itself, etc. TCU can also be affected.

Bruce

mrbenzes · 04-30-2012, 05:12 PM

I replaced my connector while I did the fluid change....it was less than $20 for the part.
Do it when you do this service...leaking or not.
Mike

mrbenzes · 04-30-2012, 05:14 PM

I replaced my connector while I did the fluid change....it was less than $20 for the part.
Do it when you do this service...leaking or not.
Mike

04-27-2012, 06:22 PM	#5
Stephen04E55 Super Member 2006 Mercedes-Benz S-Class Join Date: Nov 2003 Location: Mechanicsville, VA Posts: 740 Drives: '12 ZL1	S65, S600, and S55 have the same tranny so why should the S65 cost more? AMG speedshift BS doesn't add to the fluid capacity or a different pan/filter. I have an S65 now and have seriviced my '03 S600 which are exactly the same. __________________ '03 S600 Designo Silver/Stone. 10.58@132.46(sold) '06 S65 AMG. Black/Java with chestnut wood. Keyless go and parktronic. 11.231@125.27 1.748 60' (sold) '12 ZL1 Camaro. Air intake, pulley(13psi), 90mm TB, tune, drag radials. 11.02@126.1 1.62 60'

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04-27-2012, 08:34 AM	#2
mrbenzes Senior Member 2005 Mercedes-Benz S-Class Join Date: Aug 2010 Posts: 315 Drives: 2005 S55	It may be time for a fluid/filter change for your transmission....all of that torque is there and a cold transmission isnt controlling it with old fluid. How many miles are on your car? Mike

04-27-2012, 09:22 AM	#3
poblon Newbie Garage is empty, add now Join Date: Mar 2012 Posts: 6 Drives: S65	75K miles, but I have had it serviced regularly...is trans fluid part of the normal maint provided?

04-27-2012, 09:28 AM	#4
mrbenzes Senior Member 2005 Mercedes-Benz S-Class Join Date: Aug 2010 Posts: 315 Drives: 2005 S55	No, I think MB considers these transmissions as sealed units for life...what a joke. I think 60K miles is a good interval. Dealer quoted me $400 to do a change on my S55...S65 will cost more. Filter and fluid are about $100 - $120 for S55. Mike

04-30-2012, 08:27 AM	#6
mrbenzes Senior Member 2005 Mercedes-Benz S-Class Join Date: Aug 2010 Posts: 315 Drives: 2005 S55	Sorry, I thought the S65 had a 6 or 7 speed trany in 2006..mine has a 5-speed. If they are the same you can do the whole tranny change for $150 in supplies if you DIY. Mike

04-30-2012, 04:45 PM	#7
Becks Imports SPONSOR Garage is empty, add now Join Date: Dec 2005 Posts: 731	Check the trans connector for leaks. If it's leaking, oil travels up the harness into the conductor plate, causing weird shifting behavior, going into neutral all by itself, etc. TCU can also be affected. Bruce

04-30-2012, 05:12 PM	#8
mrbenzes Senior Member 2005 Mercedes-Benz S-Class Join Date: Aug 2010 Posts: 315 Drives: 2005 S55	I replaced my connector while I did the fluid change....it was less than $20 for the part. Do it when you do this service...leaking or not. Mike

04-30-2012, 05:14 PM	#9
mrbenzes Senior Member 2005 Mercedes-Benz S-Class Join Date: Aug 2010 Posts: 315 Drives: 2005 S55	I replaced my connector while I did the fluid change....it was less than $20 for the part. Do it when you do this service...leaking or not. Mike

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