W202 Common Problems and Their Solutions

[kei0708]

My 1996 W202 C200 has a problem is that shut down after engine is hot. Engine only shut down when the car was stopped or prepare to stop. Everytime the engine has shut down and I can restart the engine immediatey. Today I took my car to garage and check with computer. Below error code was displayed.

070 = TN signal output (rpm signal) short to ground

What does this code mean? Which part I need to replace?

I felt harassed by this problem that I cannot find the source.
Many parts I have replaced such as Electronic Throttle and Fuel Pump.

Can anyone give me some advise? Thank you very much.

Urgent please....

[chris5949]

Originally Posted by n0alpha

The part number is: 0015420219 (this also can be used to replace older part 0015424419)
And it's just a generic relay used for many different functions on the car. Costs about $29 at the stealership or $14 at www.autohausaz.com

I brought the same relay fuse to replace but the one in my trunk's pin are all flat, not round... is there somewhere I over look?

[guanabara]

Originally Posted by kei0708

My 1996 W202 C200 has a problem is that shut down after engine is hot. Engine only shut down when the car was stopped or prepare to stop. Everytime the engine has shut down and I can restart the engine immediatey. Today I took my car to garage and check with computer. Below error code was displayed.

070 = TN signal output (rpm signal) short to ground

What does this code mean? Which part I need to replace?

I felt harassed by this problem that I cannot find the source.
Many parts I have replaced such as Electronic Throttle and Fuel Pump.

Can anyone give me some advise? Thank you very much.

Urgent please....

It seems very similar to a crankshaft position sensor I had on a 99 E320. They are the same p/n I believe. Not sure where yours would be, but that is most likely your problem too.
Those Bosch sensors do fail quite often.

[kei0708]

Originally Posted by guanabara

It seems very similar to a crankshaft position sensor I had on a 99 E320. They are the same p/n I believe. Not sure where yours would be, but that is most likely your problem too.
Those Bosch sensors do fail quite often.

Thanks for your advise.

Yesterday my garage told me that my car's computer have problem.
They have taken out the computer for testing.

I am suspected that computer has damaged or not.

Before my garage has tried to install a second-hand computer in my car but the car was shook and irregular. And then they have reconvert my own computer and the car seem normal again.

Now I just can wait for the result to confirm the problem is caused by computer or not.

My friend also gave me some advise and they think that is related to the Crankshaft Position Sensor or O2 sensor. What do you think?

Many thanks.

[nzboy]

if your car rpm needle keeps jumping up and down on idle or braking at traffic light, then its the fuel pump. Had the same problem, took the benz specialist, replaced pump, and told me that too much fuel was getting pumped to the engine that it needs which causes the car to waste lot of fuel. Works fine now.

[jimmywig88]

Hi All, first time poster but have read this thread up and down.

My Trans is the 722.6 model (5 Speed Electronic), it shifts VERY rough (jolts the car) especially first thing in the morning and especially from gear 1 - 2 and 2 - 3.

It also doesnt gear down correctly - for example if im doing 60km/h and put my foot to the floor it doesnt gear down it just very slowly builds up speed ( i have been gearing down manually as a work around)

Last thing it splutters and backfires in the morning if you take off onto a busy street and almost comes to a complete stop whilst doing this, and sounds like its coming from rear exhaust.

AND this morning i was driving on the freeway and for no apparent reason the engine turned off and all the lights on the dash lit up, after this i pulled to the side and was able to start it up again.. but why ? the car wasnt even hot. I did have the stereo up loud with the heater going.. but nothing out of the ordinary

A lot of fixes out there suggest looking at the vaccuum module and checking pressure but i dont think mine is the Vac operated tranny?
Any ideas what this might be? i have done a trans service, spayed the MAF sensor with MAF cleaner, ignition coils apparently tested and ok.. oh and replaced fuel filter
- James

[ghartin]

Originally Posted by Petebycroft

1. Purchased 2 months ago 95 C220 101k's
Problem : ran like crap , Rough idle , surging all gears , hard shifts , temp high , Interior Fan worked when turned off (Hot) , windscren wipers possessed as well , no guts when accelerating.

Advice from forum users

Fixes done
New wiring harness Under bonnett $1500 Aus
New MAF Sensor $400 AUS

Fixed running , idle , surging , hard shifts , got guts now.

Clunk under Front end when applying brakes after reversing out of driveway

Problem Diagnosed by forum member
Lower control arm bushes

Problem Fixed by replacing bushes (and just for fun lowering it with Red Ryder lowering kit) Bushes $190 AUS
Lowering Kit Front Only $400 AUS

Next Problem Running hot
110 C in traffic but 87C on highway

Fixes Done
Powerflush Radiator
New Coolant Added
New Thermostat Total $200 AUS

Problem not fixed

Help from forum users
Low Speed fuse faulty was diagnosied by astute member.

Fixes Done
Replaced fuse 30 Cents

Temperature now 90C ANYWHERE

Help Given *** PRICELESS***

Problems left
Windscreen wiper possessed ( Has gone for now by pulling actual stork in frustation and it works well) Cost Headaches

Fans will turn on when they want ( Also gone for now cause i have been stroking the fan button and saying sweet things to it) hope this works also.

Stay tuned for the never ending story of owning a Benz

Is the "low speed fuse" located in the fuse box? How could you tell it was faulty. Would this also apply to a W201?
Gene 1997 C280

[ghartin]

Problem: No AC Center Vent
Problem Cause: Bad Blend Motor
Solution: Remove Dash & Replace

I'm thinking of having this repair done at and Indy shop per their diagosis. The labor is as much as 8 hours. I replaced the HEPA filter as someone suggested but this didn't help. I'm wondering what type of preventive repairs would be advisable while the dash is off. Bellows? Heater Core? Other?
Gene 1997 C280

[j_rohas]

C230 '97
After brake pads replace ABS's light comes on and off intermitently. While ABS's light is on car doesn't shifts. I stoped the car and restart, ABS's light goes off, and trans. shifts normally again.
Last week ABS light goes on permanently and trans. doesn't shift. Scanner "says" Vehicle Speed Sensor (VSS) malfunction.
ABS sensors were cleaned: Problem not solved.
Someone could tell me exactly where is the VSS located and if this sensor controls the transmission shifting?
If i replace this sensor, will i solve my shifting problem?
Thanks in advance

[PatrickSWE]

Originally Posted by RonCT

If you're immobilizer is not functioning correctly, the car will crank and crank and never "fire up". Check if your red and green lights on the mirror flash alternatively

Any chance to bypass this problem?
i´m about to change the engine control unit and are a little bit afraid that it would come to this problem.