My wife's 2002 c240 has been acting up recently. She complained the other morning of the car not wanting to upshift and wouldn't change form Summer to Winter mode. I disregarded the second part and assumed it was shifting late when cold which is normal when the engine is trying to warm up. She rarely allows her car to warm up before driving.
But tonight she called me because she was driving on I-5 and at 40 mph her tach was reading 5k!. Told her to pull off, shut off the ignition and try again. It worked. But I had her bring it by my work so I can see if I could duplicate. I started the car. Emmediately tried to shift to Manual mode and it wouldn't. The 'D' indicator would not change to a gear position. So I drove it. It would not upshift out of first. I turned the car off, turned it back on. Tried the summer/winter button. It worked. Tried the manual shift. It worked. Put back in 'D' and drove off and it worked just fine. I'm curious now if the transmissions computer is acting up. It's intermittent for sure. Any ideas out there??
Last edited by driver450190 : 01-19-2008 at 08:37 PM.
Why would it go into safe mode? It's cold but not that cold. About 38 degrees. Now it won't start! Had it towed because my wife couldn't drve it home. So I decide to check for codes and the car won't start. Car was towed on a flatbed.
First, is the check engine light on? It can be some sensor that found an error so severe that it is limiting your speed by locking the tranmission in a low gear.
Second, you'll need to check the tranmission fluid level, it may be low. Unfortunately, MB has gotten cheap in the last 10 years or so and stopped the time honored tradition of including a dipstick for oil and tranny fluid in most of their cars. You can have the dealer check, they use a service diptstick or you can go to the dealer and buy one and ask them for the spec for you car as it's a generic dipstick that measures how many mm of oil you have from the bottom of the pan on up. For all I know you can take the tranny dipstick from another car, as long as it hits the bottom of the pan and measure the height of the oil. Be careful removing the pin that releases the cap on the tranny dipstick tube, it's pita to get off and reuse, many break it off then you have to go buy another one.
No check engine lights. I disconnected the battery for 30 minutes and it reset something and started back up. I am getting the malfuntions code of " ESP is innoperative" or something along those lines. I'm buying an OBD2 reader today to see what code I might have. Noone can see the car until Tuesday... Except for Merc-Benz. I've learned my lesson there. I have a relationship with a place called Aubur Foriegn Auto. They're honest, real good people there. And they don't leave dirt in my interior and misrepresent themselves like the previously mentioned.
I bet even you auto up on the power windows don't work either, wow, the car is falling apart. After disconnecting the battery you have to follow re-sync processes outlined in your owners manual like turning the wheel lock twice to resync the ESP and open the windows and then hold the windows in a closed position for a few seconds to reset them.
I bet even you auto up on the power windows don't work either, wow, the car is falling apart. After disconnecting the battery you have to follow re-sync processes outlined in your owners manual like turning the wheel lock twice to resync the ESP and open the windows and then hold the windows in a closed position for a few seconds to reset them.
I already reset all this. Here's the worst of it. Where my frustration is coming from is not that the car has an issue. Well that sucks but it has a warranty. The problem now inlies the waranty. Ultimate Warranty Corp is in the process of going through a risk management company. They have 7 million dollars with an estimated 48 million dollars in claims. So were supposed to pay the bill and wait for a partial reimbursement. If you do the math, you might see how partial that is. And the warranty was $3k.
Code reads P0702. Trans Control Sys Electrical
This apparently is a common issue with the C240. Lot's of topics on it with no answers. I'm also assuming that since I don't have a Mercedes specific scanner but rather a Mac Tools scanner, I'm getting a generic code. Has anyone experienced this? What were the results?
You have two choices, low tranny fluid will throw codes like this randomly so that's where I would look first. Unfortunately, checking trans fluid on an MB is not DIY, it requires you to buy a service dipstick from the dealer and get fluid level spec for your tranny. Also, just removing the dipstick cap is an art, most people break them so you may want to buy the replacement at the dealer when you are buying the dipstick. The second choice is to take it to a mechanic specializing in MB or a dealer and have them attach the Start Diagnostic tool and track it down that way.
Did you spill a liquid in your center console, it's been known to cause this problem, may have damaged a sensor.
I don't believe so. It's my wife's car but there are no signs of spillage. How scary though. I've read that by spilling on the console could be a thousand dollar repair. Jeez!
Linear Mode
