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E320, 2001 Model. Engine Revs stays revving high when driven cold.

I have a 2001 E320. When the car is started cold, the engine seem to stayed revved up to 2500-3000 rpm when you take off. It seems to rev up very high when driven for 1-2 mins. and satys on one low gear and does not change up. I stopped the car then re-started it, and the problem went away. It happened a couple of time on very cold mornings- 8-10C, When I sit there an ideling it for 1-2 mins before driving off. it seem to cut back to normal gears when you pick up speed, 20klm/hr, then 40klms/hrs and then60klms/hr. The gear seem to change fine.
I took it to my Merc specialist and he said the computer is showing it's storing some flat battery fauls in it's memory and this may be the cause. I left it with him overnight to see if this problem will re-occurr. It seem to be OK on warmer morning.. and doe snot seem to happen when the caris warm.
What are your thoughts.
Thank you..Andrew

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  • CHUNKY_e320 Jul 02, 2008

    Thank

  • cojaken Apr 10, 2009

    Mine is an 1999 E430 and when cold the low gears are held for about 10 minutes after starting!



    I know the intention is to promoite a quicker warm up, but that is only supposed to be a minute or so.



    Any solution anyone please?

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