Hi,

I have a 97 420E with 105K. This past weekend the car just will not start. The lights on the dash will come on but the car will not even start to turn over. No clicks, no nothing. Any ideas? Could it be the CPS? Any help is appreciated. Thanks.

sid

 

Simple things first: Do headlights, dome light, etc. work, or are they dim? Dash lights will work even with near-dead battery. May need to have battery tested if you suspect it's bad. How far will key turn in ignition? Try turning steering wheel to enable ignition also.

 

Hi. I forgot to mention that I did replace the battery. The steering column is not locked and the key turns all the way to the right. Originally I thought that maybe it was a problem with the factory alarm but when I called the dealership they told me that the security system wasnt the problem.

 

not CPS.

starter won't actuate...right?

VIN? i need to know the car.

 

Hi Sleepwalker. Thanks for the reply. The vin is:

WDBJF72F8VA198940

 

And you're correct...the start will not actuate. I tried starting in neutral, nothing. I tried disconnecting the security and then reconnecting it...nothing.

 

As Sleepwalker states .. not CPS

And not DAS, because the Drive Authorization System inhibits the Engine Management System. So the starter would still spin, but the engine wouldn't start.

Re-check the battery connections. ( make sure they are clean and tight )

Verify that the battery is indeed "good" and fully charged ( with a battery tester preferably )

Check the starter relay & fuses.

Hope this helps.

 

Thanks for the advice. The battery tests good, I recleaned the connections, all fuses and relays appear to be intact. But, still no starter action.

 

this will be tough. but if you are a fair handyman, we can work it out together.

let's start by studying the wiring diagram. as you can see, the violet wire is the terminal 50 (starting). first it goes to the cycle module (N65).

step 1. can you get the 12volts power everytime you turn the ignition switch to start position?

you check from connector B, pin number 2.

step 2. can you get that 12volts power on violet/white or violet wire on connector X22? (you may skip this step first)

step 3. can you get that 12v on the back of starter at start position?

step 4. can you get a good 12volts on that X4/31? (inside or outside...whichever is convenient for you, but you may skip this test first)

step 5. can you get a good 12volts on that X4? (inside or outside...whichever is convenient for you)

give us a lead and then we can analyze where the problem lies.


[IMG]local://upfiles/1/053A9FAC74AF489591FBB4BE5F99C70E.jpg[/IMG]

[IMG]local://upfiles/1/15CEDAA7F28A4C5A95CE6F9E68F654C1.jpg[/IMG]

 

your car is E240.
210.072
produced november 7, 1996.


[IMG]local://upfiles/1/B9FB0B4BFC1942E8AA85B72273B2771C.jpg[/IMG]

[IMG]local://upfiles/1/DEE63935A3444D8891B31C9FE5EFF423.jpg[/IMG]

[IMG]local://upfiles/1/ADE5E78B007D4C6BA47D2CB7B4E2FC30.jpg[/IMG]