Mercedes C200 CDI 2003 non igntion!!!

[z786]

Hi,
jus had a second one like this in 2 weeks,

problem: when key is inserted the igntion wont come on nor does steering lock open, like as if wrong key.

keys locks and unlocks doors via remote

car was fine but parked on driveway for 3 months now developed problem

Any hints????????

Thankyou

[cristec]

Had a few of these where the coil at the end of the key has dry joints on it, if you slide the printed circuit out of the key, you might find this has happened.

HTH

[dunnnia]

HI,What the Star diagnosis say's?Do you have both keys?

[PremierD]

Hi,
jus had a second one like this in 2 weeks,

problem: when key is inserted the igntion wont come on nor does steering lock open, like as if wrong key.

keys locks and unlocks doors via remote

car was fine but parked on driveway for 3 months now developed problem

Any hints????????

Thankyou

Had this a few times aswell mate ...Usually after Geneticly altering the miles down the way.....If you remove the keybox and open up ....You will see a little anodised link which Hooks onto the Barrel...Make sure it has'nt moved ... The next bit is more complex ... The link connects (eventually to a small Micro switch .. ) when you put the key in .. it Either makes or breaks the circuit.. which send a signal via a red flashy light thingy....(MH will luv the description ) to accept the key.. Hence giving you ignition ...They do Break and stick...But not easy to check without Desoldering the Key box ...And even harder to get if it is fcuked ...I hope I'm wrong ... ( just remembered MH .. Infrared)....

[cristec]

I don't think it will be an infra red key on this year.

[Meat-Head]

just remembered MH .. Infrared)....

This evening evrybody will mainly be 'aving a go at me!
I have no problems, just as long as nobody starts posting photos of 'Tracy Barlow' then i'll be off for a bath!

If it is the case of tiny microswitch and it has been stood, try thumping around the ign barrel area, not had this myself

[PremierD]

I don't think it will be an infra red key on this year.

Have you looked inside A 2003 merc ezs mate ... There is a light source ... And it is Red...And it shines on the Key ...which has a RED filter... So if Infrared ..(which I know is not visable ) does not sound right ..the my red light thingy still holds up ... Just tought it sounded better....

[cristec]

Sorry thought you meant the remote locking was via infra red.
I knew that the key had an infra red emitter, but I thought this was an emergency override to get into the car, if the radio frequency remote unlocking had failed, using the receivers in the boot or driver's door handle.

[z786]

Thanks for the input guys, i cant get a diagnostic reading because the ignition doesnt switch on
the car hasnt been clocked (or so the guy sez)
the key IS indeed infrared, iv checked AD and there is one ignition circuit fuse and 3 ignition cicuit relays
fuse seems fine, no idea how to check relays

so am i looking at the headache of ripping the keybox out? or shall i tap it like MH sez??

cud the key hav lost the coding? (there is only one key)

thanx

[cristec]

Hi have you tried dis-connecting the battery, and joining the pos/neg leads together for 30 seconds, I think the infra red key still has this inductive pick-up coil inside.
I tried to take a picture to show you what I mean but don't know how to upload to the site.

[Meat-Head]

It don't work now, so thumping the dash isn't going to hurt, no differance thumping dash than driving down Coranation Street (looking for Tracy Barlow) on the cobbles, or cattle grid etc

As for ignition, look at the fuses and pick one a random, eg wipers, these are ignition fed, if nobody is looking, them jamb a bit of wire in one and the other end into a b+ fuse eg radio, and hope the ignition comes on to work your scammer.

Relays, you have 30 and 87 thses are the contacts 85 and 85 are the winding, so make sure you have ALL body parts eg hands and your willy out the way and link 30 to 87 on the relays one at a time, beware the starter might start, the hoother might hoot, the wipers might wipe, the washers might wash, and the PISStons will confuse you.

Unplug the wiper motor if you can they are nasty things near the fusebox.

[z786]

I tried to take a picture to show you what I mean but don't know how to upload to the site.

when you post, make sure your in advanced mode, there will be a link 2 upload files. thanks

will try all ideas given and will post back

thanks

[cristec]

This is the coil I have had with dry joints in the past

[Dajan2009]

Yes, You CAN check for faults and wrong immo values in EZS with Star, just dont try the "quick test" way, go to "control units-body-EZS" and it dont need ignition. Check actual values, it could be just a missing autorisation from the key. As many said before, maybe it's a bad soldering point, or the key is gone because for turning and startin it need another code. Or it is the ELV.. just check with Star first.
I'll post later what values You need in EZS.
Cheers

[Dajan2009]

In actual values of EZS you need for starting:
under terminal 15 - 50 : key iserted-> yes , output circuit 15R-> yes , output circuit 15-> yes , coil for energy supply...-> YES
Operating state EZS and ESL: everything YES, only the last two can be NO but you hawe to activate ESL to finish the job, I found few cars not starting without that last two values.
Under menu Drive authorization on the top is the current key number, it have to be a number! 1,2,3..8 whatever! Power suply over 11 volts. Current key-> recognized. And now..the last but most important:
EZS turn enable MUST be YES, if it is no, make new key.
ESL start enable MUST be YES, if it is no, change ESL or EZS.
ME start enable MUST be YES, if it is no, change engine ECU, or just make it virgin and try to code it to the car.
Of course, I suppose you had checked fuses before
Cheers