Immobiliser

[ahmed7272003]

Please any body can help me .....?? my car is c180 w202 mod1994 ((( i clsed my cars doors while one of my friends was inside the car and he oppend the car from inside after that we could not start the car . Note: we opened the car by the key and closed again proper way and we coud not start there is no sign of electricety except the srs light only ...another information there is no alarm in my car (only key) ...

 

[Dec]

[YOUTUBE][/YOUTUBE]Open the car door in the same way that you closed the car door with your friend inside.
Test your remote… if you have one.. . view through a digital camera.

Dec

[YOUTUBE]zQhwvjw29NA[/YOUTUBE]

 

[grober]

There may not be an " alarm " that makes a loud noise but there could be an immobiliser. First thing is to check the alarm with a camera--if its not working change the internal batteries--- then resynchronise [ match up] the key with the car-- should be instructions in your owner's manual. [ info on the forum here if you do a search] If after changing the batteries the key still doesn't work a small internal switch may have failed- you need to split the key in 2 and repair by soldering [ if you can't do this get a local radio repair man to do it] instructions here

Synchronizing infra red key 124,129,140,202, 210 - Mercedes-Benz Owners' Forums

and here

repairing broken W202 Key fob. - Mercedes-Benz Owners' Forums

ps you might well have to register on that forum to see the details but its free to join.

 

[ahmed7272003]

i mean there is not an alarm system in the & no remote only key

 

[Dec]

Will the key make a FULL QUARTER TURN in the lock?
When the key turns, it hits a switch which disables the immobiliser and unlocks the doors.
Does the vacuum pump make any sound when you unlock the car?

Remove the lock and inspect the lock shaft / rod you see in picture.

Putting a flat screwdriver into the vacant lock hole… where the shaft / rod was should do the same job as the key in that it should unlock the car and disable the immobiliser, that is, if the lock is faulty.

What electrical consumers are NOT working?
Wipers? Indecators? Horn? Heater blower?etc
Havr you checked fuses?

Dec

 

[ahmed7272003]

all the vacuum pumps in the doors its working because when i open the doors from the diver door all the doors its open >>>(sound like what)?

 

[Dec]

Check fuse… 20…23…27
Is there anything that is not working on the car?

Dec

 

[ahmed7272003]

yes i checked the fuses

 

[ahmed7272003]

this is my problem???

the key has 4 positions for start and we cannot reach the 4 position during turning the key and the panel has no electric except srs light<<<

 

[Dec]

Does the engine turn over and try to start at position 3 start in picture below?
What lights come on when you turn the key in ignition?
Is the car battery good?
Are ALL the electrical wires connected to the battery tight?
Are there Red and/or Green lights flashing on the car anywhere?

Your picture is of the boot (trunk) lock, below is the ignition lock, different key from yours?

Dec

 

[ahmed7272003]

no the engine is not start because i can not reach to the position 3 in your pictures

 

[ahmed7272003]

the only red light in the radio

when i turn the key to position 3 the light stoped

 

[ahmed7272003]

the battery is very good & ALL the electrical wires is connected to the battery tight

 

[grober]

Sounds as if you have a EIS Electronic Ignition Switch problem. Fortunately in a 94 car its unlikely to be electronically security matched to the immobiliser or engine ECU. If all the normal dashboard lights don't light up with ignition switch-on= the key position before the starting one--- that's the most likely place to look.

 

[Dec]

I think your problem might be that the ignition lock is damaged or perhaps worn inside.

If the ignition lock is worn inside then there is a cure for this problem, I had this problem too. Have a look at this Guide over here… W202 Ignition key won’t turn past 1 or 2 - Mercedes-Benz Owners' Forums

If you are not good at working with cars then get someone who is.

Don’t turn the steering wheel while the ignition lock is removed from the car, however you can try to start the car with a screwdriver but DO NOT move the steering wheel or try to drive the car.

It may still be possible to get the key to turn one time, so as to start the car, by shaking it, as you try to turn it, treat it very GENTLEY and without force and you might get lucky.

Let us know how you get on. It may not be the immobiliser but a bad ignition lock.

Dec

 

[ahmed7272003]

i can only reach to postion 2 in Dec pictures

 

[Dec]

no the engine is not start because i can not reach to the position 3 in your pictures

when i turn the key to position 3 the light stoped

Will the key turn to position 3?
or
Will the key NOT turn to position 3?

Dec

 

[ahmed7272003]

ok Dec i well try to do that & i well tell you whats happen >>>thank you guys

 

[ahmed7272003]

the key is not turn to position 3 >>>i am very sorr

 

[ahmed7272003]

I took the car to a repair center & they solve the problem by 100$ >
they told me the problem it was in the connections in the back of the ignition lock