C240 Help
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c240
C240 Help
I have a c240 2002 i want to ask something , if i put N(neutral) and let the car roll for a while and then if i stop or not when changing the gear back to D(drive) the car make a "bump" from the gear and then evrey thing is back to normal , all the driving in the car is normal nothing is bad exept when i roll the car on N and then put D. is this normal?
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From: Llandudno, Cape Town, South Africa
late 2009 CLK 350 Coupe Elegance, '65 Jaguar S Type wires
On a 2002 without the reflashable TCU this is probably normal if all mountings etc are in good condition. Software for these transmissions has improved over time. I think it is just the TCU not computing input shaft sensor data with output shaft sensor data quickly enough. The practice of freewheeling in Neutral is not a good one. Keep the car in Drive when moving.
Super Member
Joined: Jul 2008
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From: Portland, Oregon
2016 GLE 350
TCU = Transmission Control Unit
As Glyn notes, sounds like the 02 model year TCU is not programmable, so you will just have to live with it.
I also agree with Karo, definitely check the tranny mounts. Although not a rampant problem, it is not un-common for them to fail.
Good Luck on it.
Greg
As Glyn notes, sounds like the 02 model year TCU is not programmable, so you will just have to live with it.
I also agree with Karo, definitely check the tranny mounts. Although not a rampant problem, it is not un-common for them to fail.
Good Luck on it.
Greg
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Super Member
Joined: Mar 2011
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From: Jakarta, Indonesia
C240
Check the mount. If it's okay, then it's just the car being silly, like what Glyn said. I have the same problem too, but checked the mount and it's okay, so my car is definitely silly. Hahaha..
Member
Joined: Jul 2006
Posts: 103
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From: Central Valley
2002 C240 (SOLD), 2006 E350
Isn't that bad for the transmission guys? Putting it in NEUTRAL and then DRIVE while its in motion puts a lot of wear on the transmission. I did it before and my transmission felt like it was going to brake into pieces. Mine also made a loud "thump" and the car jerked for a second.
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Joined: Jun 2008
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From: Llandudno, Cape Town, South Africa
late 2009 CLK 350 Coupe Elegance, '65 Jaguar S Type wires
Freewheeling in neutral is not a good idea. Fortunately with a Benz transmission at least the oil pump still works. With some US transmissions the oil pumps don't operate in neutral.
Last edited by Glyn M Ruck; Jun 10, 2011 at 10:00 AM.
Newbie
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2002 c240
I've a 2002 c240 55,000mi. Had the oil changed at the local Benz dealer and the gas cap replaced. On my way home the too much oil warning came on. When I floored it it responded sluggish, and an ENORMOUS cloud of light-colored smoke came out the exhaust and it eventually died. It started right back up and I dropped it back off. Any and all comments would be greatly appreciated. I don't wanna get ripped off if they claim it's just a coincidence(and charge me for something else).
Member
Joined: Jul 2006
Posts: 103
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From: Central Valley
2002 C240 (SOLD), 2006 E350
I've a 2002 c240 55,000mi. Had the oil changed at the local Benz dealer and the gas cap replaced. On my way home the too much oil warning came on. When I floored it it responded sluggish, and an ENORMOUS cloud of light-colored smoke came out the exhaust and it eventually died. It started right back up and I dropped it back off. Any and all comments would be greatly appreciated. I don't wanna get ripped off if they claim it's just a coincidence(and charge me for something else).
I change my own oil all the time and I use Mobil-1 0w-40. Ever since, I had no problem with the low oil warning, knocking, or sluggish performance issues.
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Joined: Mar 2007
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From: VA
THE C350
Yeah just start yelling at them if they try to say it was not there fault. Ask for hard evidence it was not there fault and also get mbusa involved early if needed as well as all managers/owners.
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Joined: Jan 2005
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From: Orange County
2005 C Wagon (No snickering please!)
You would think a dealer would use the service dip stick to check the calibration and operation of the oil level sensor as well as checking their own work with regard to the correct amount.
You should have entered the dyno mode and taken a picture of the oil level shown in the MFD. That would end the static about "the oil level is fine" from the service manager. They have been known to CYA.
You should have entered the dyno mode and taken a picture of the oil level shown in the MFD. That would end the static about "the oil level is fine" from the service manager. They have been known to CYA.
Newbie
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I have a c240 2002 i want to ask something , if i put N(neutral) and let the car roll for a while and then if i stop or not when changing the gear back to D(drive) the car make a "bump" from the gear and then evrey thing is back to normal , all the driving in the car is normal nothing is bad exept when i roll the car on N and then put D. is this normal?
Basically i was under the impression that shifting into neutral in traffic jams and on traffic lights reduces the fuel consumption.
Not anymore, although the fuel prices in Lebanon are sky high!
Khalil where are you from?!
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2002 c240
Just to respond to the original question, went to the dealer to diagnose some noises. They told me I had a lot of engine vibration coming thru the cabin and therefore needed new motor mounts and the transmission mount replaced. So I replaced them myself and the car drives so much better. these cars are great but you need to keep up on the maintenance. I ve learned that the hard way
