'99 E300TD Keyfob Locking and Ignition Issue
Thread Starter
Junior Member
Joined: Jan 2013
Posts: 20
Likes: 0
'99 E300TD Keyfob Locking and Ignition Issue
Went to start my '99 E300 today and nothing. At first the key went into the Ignition and turned but the car didn't crank or start at all.
Pulled key out again and now the steering wheel is locked and ignition switch is locked too. It will not register the key whatsoever. Key fob also stopped locking and unlocking car. I do not have any spare keys, so I'm stuck with what to do next.
-Replaced key batteries, key fob works, check IR light on the end of the fob
-Cleaned the lens on the key and ignition switch
-Checked Fuses, all good
-Battery voltage checked in the car
Are there any other things I should check? Its almost like the car lost the recognition of the key completely.
Pulled key out again and now the steering wheel is locked and ignition switch is locked too. It will not register the key whatsoever. Key fob also stopped locking and unlocking car. I do not have any spare keys, so I'm stuck with what to do next.
-Replaced key batteries, key fob works, check IR light on the end of the fob
-Cleaned the lens on the key and ignition switch
-Checked Fuses, all good
-Battery voltage checked in the car
Are there any other things I should check? Its almost like the car lost the recognition of the key completely.
Member
Joined: Apr 2019
Posts: 125
Likes: 19
From: Atlanta, Georgia, USA
320e
I think they can make you a key with the VIN. I had a locksmith make me a spare and it works fine. He knew how to connect with the Mercedes computer and it programmed the FOB. Cost about $200 as I recall.
MBWorld Fanatic!
Joined: Jan 2004
Posts: 5,939
Likes: 178
From: Seattle WA
99 E320
read MBUSAs policy here which, for the most part, will require the car be brought in to the dealer now. Smartkey now averages $300
https://www.benzworld.org/threads/ca.../post-18332241
OP didn't identify car battery voltage but if it isn't in the high 12 under load the ignition module may not function
i keep this inexpensive doohicky in my toolbox. I SEE THAT EBAY reference is dead. Seems the keywords on ebay are "Car Key ECU Test Coil Induction "
Here is to similar
https://www.benzworld.org/threads/ca.../post-18332241
OP didn't identify car battery voltage but if it isn't in the high 12 under load the ignition module may not function
i keep this inexpensive doohicky in my toolbox. I SEE THAT EBAY reference is dead. Seems the keywords on ebay are "Car Key ECU Test Coil Induction "
Here is to similar
Last edited by raymond g-; Jan 11, 2022 at 11:34 PM.
