W204 220cdi sports 2008 will not start...
Can anyone help me to understand why my w204 c220 cdi sports 2008 will not start?
Background on my Car history:
Car was involved in a accident 4 months ago, insurance approved repair, engine had to be removed whilst they fixed the front leg, car was rebuilt tested and delivered to me about a month ago, car was running perfect no issues.
2 days ago I noticed an alert on the dash about pre safe left front fault...
This fault came up a few times .... never thought much about it....planned to run car in and get it check ..........but........
Yesterday I Unlocked the car from remote, mileage showed up on dash as usual.
Put key in – – I did not hear the usual vacuum sound??? Turned key and nothing happens.
When I remove the key I can hear a faint clicking sound (like a relay) it clicks 3 times pauses and click another 2 times.
Both keys are doing the same & I tried removing battery but still no change.
Could it be the key module or immobilizer or the pre safe warning issue????? Could it be the pre safe is linked to the immobilizer therefore now disabled.....
The repair garage is running me round in circles………….
Waiting for a engineer from a reputable company to come and do an initial check for me… on monday
Please help me to understand what’s gone wrong - Any suggestions to resolve would be appreciated
You can check voltage on your instrument panel by going into engineering mode.
Also, if headlights give full illumination is a good indication . Battery terminals tight ?. Front earthing points tight ?
Starter motor maybe at fault . Check starter relays in front Sam are pushed firmly in place.Give starter a light sharp crack with a little bar to possibly shake sticky solenoid.
Also would check if there are any codes presented on an OBD 2 Scanner.
Hope others may help too.
What part of the world are you from ?
Good luck & let us know how you go.
Last edited by Carsy; Sep 2, 2011 at 04:54 PM. Reason: add
No luck yet - tried all that you sugested - still Not starting .....I've been doing a bit of research and found that the pre safe mechanism has 3 stages - last stage disables the engine and fuel supply. Still confused on this....
The system may need to visit the dealer & be connected to the MB Star computer to diagnose the problem.
This is all I could find on the system :-
http://www.emercedesbenz.com/Nov08/1...AFE_Brake.html
The accident repairs may have overlooked all the inputs to the presafe system eg steering angle, wheel speed ect.
I think a MB specialist is required.The Star system may pin point it immediately.
Good luck on Monday.
Any other input from this forum . Don't let the diesel engine put you off. The rest of the car is the same
!!
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I would check the front Sam control unit with fuse for a start !
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Good luck.
I have done it before on German auto electrics. Taken out all the crappy solenoids & switches & replaced them with heavy copper wire & Euclid truck switches. ie
Toggle switch for ignition.
Push button switch for glow plugs.
Push button for starter .
Kill isolator switch in ash tray.
Worked for years without trouble!!
I have better start to collect the gear !.



