Key wont turn - Mercedes-Benz Forum
 
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post #1 of 10 (permalink) Old 10-30-2017, 08:44 AM Thread Starter
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Unhappy Key wont turn

Hello all,
I am trying to see why my 2000 e320 wont turn

this is what happened, went into walmart came out put key into ignition and cant turn key left or right,
I checked my battery twice at autozone and orilleys, getting 12 v, I checked every single fuse in the car, my key will
unlock the doors fine.
I didnt want to spend 400 bucks on a key that may or may not fix issue.
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post #2 of 10 (permalink) Old 11-01-2017, 02:16 PM
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Accuracy on these numbers is important.

12.0 Volt is dead (won't start)

12.4 Volt is low

12.5 or 12.6 is good

Have you dropped the key recently?

The start circuit and unlock circuit are separate. It is possible for one to work and not other.

Also possible EIS died.

Last edited by 93SoCal400E; 11-01-2017 at 02:25 PM.
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post #3 of 10 (permalink) Old 11-01-2017, 02:25 PM
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12.0V should still turn the car over. I've seen batteries at 11.8V that could turn over the engine. Plus, the key should still turn even with low battery.

Sounds like dead EIS if he can't even so much as turn the key.

2000 S430 (Dad's car, used for special occasions)
2000 S500 (wife's DD: my first W220 project car)
2003 S600 ("sex on wheels"--second w220 project car)
2003 S430 (one of two current DD's--third W220 project car)
2005 E320 CDI (the other current DD--first W211 project car)
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post #4 of 10 (permalink) Old 11-02-2017, 07:32 AM Thread Starter
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I did go to junk yard and geta ignition switch(EIS) module, it did the same thing. benz dealer says it has to be married?
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post #5 of 10 (permalink) Old 11-02-2017, 09:27 AM
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Should be posting here: https://mbworld.org/forums/e-class-w210-2/ - pull board and check key internals.
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post #6 of 10 (permalink) Old 11-02-2017, 09:41 AM
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Originally Posted by baiotelecom12869 View Post
I did go to junk yard and geta ignition switch(EIS) module, it did the same thing. benz dealer says it has to be married?
Of course. If Mercedes didn't do this, every car thief would be flatbedding Mercedes away then swapping in new EIS and driving away.
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post #7 of 10 (permalink) Old 11-02-2017, 09:57 AM
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The key not turning and the car not starting are two different issues. If the battery is weak, but not too weak to open the doors, it is very likely that it is not too weak to turn the key in the EIS. If the key turns but the battery cannot maintain at least 10V while cranking, than it would be an battery issue.

I would just get one of these to determine whether the key or the EIS is bad.

https://www.ebay.com/itm/Car-Lock-Co...FZZhea&vxp=mtr

If you need one urgently, you can make your own with some thin wire and a small LED.
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post #8 of 10 (permalink) Old 11-03-2017, 07:44 AM
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had this same issue 3 weeks ago. it's the key. can only get it from a dealer. you 'might' be able to find someone to repair it. the EIS doesn't require much voltage but the key internals must be working. price the key at EVERY dealer within driving range AND be prepared to bring the car there when it comes in. someone might know a dealer that does not require the car to be there, but all 5 dealers in my reasonable area did. and the prices ranged from $280 to $500.

good luck

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01 e320 black 158K ... black beauty (for sale)
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post #9 of 10 (permalink) Old 11-03-2017, 08:24 AM
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Originally Posted by Harv81 View Post
Of course. If Mercedes didn't do this, every car thief would be flatbedding Mercedes away then swapping in new EIS and driving away.
Car thieves do this anyway. Remember, the chop shops have the EEPROM programmers to "re-virginize" EIS's and reprogram them to the cars. This move by M-B has very little to do with any anti-theft concerns and much more to do with trying to force people to go to the M-B dealer when things go bad, so M-B makes more money. It's all about the Benjamins, baby....

2000 S430 (Dad's car, used for special occasions)
2000 S500 (wife's DD: my first W220 project car)
2003 S600 ("sex on wheels"--second w220 project car)
2003 S430 (one of two current DD's--third W220 project car)
2005 E320 CDI (the other current DD--first W211 project car)
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post #10 of 10 (permalink) Old 11-03-2017, 09:35 AM
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I think MB dealers are more interested in selling you brand new Benzes when your car is stolen, rather than selling keys. They have pressures from the insurance industry to make sure that you are the owner. That is why I believe they had to come up with all these TRP policies. If they dispatched keys to every Tom Dick and Jerry who claim they owned the car, they would be in a lot of hot water with courts. There may be some dealers who are willing to bend the rules, and supply you the keys with minimum documentation.
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