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Problems with shifting to second gear it jerks and rpm goes a little up and down and gets much better when the gearbox is hot both things. w211 5g

872 Views 10 Replies 6 Participants Last post by  mersum1es, 
E
Hi, problems with shifting to second gear it jerks and rpm goes a little up and down between 20-90 kmh not all the time. And gets much better when the gearbox is hot both things but not perfect.
It shifts four times to fifth gear so that's as it should be and it always shifts in 20 km h (12.5 mph) to second gear. It shifts with no jerks to all other gears.

Codes: P2502 P2500 P2404

Mercedes w211 2004 270 cdi 5g tronic

Just check if anyone knows what the problem is and write if you want a video exactly what I mean.
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T
Those codes are symptoms of a slipping transmission. Basically, you have the input speed sensor comparing the output speed and concluding that something is not matching up. That's why you have the engine racing up and down because your friction discs are likely worn away or you have another valve body issue. Yes, it could also be low fluid but get this thing checked out before you ruin it.

check the fluid hot and also get a sample of it to see the color. What year and mileage is your vehicle?
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All sounds like a rebuild is needed. Quit driving it as you will only make things worse by damaging the hard parts in the transmission.
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