Hi
this might sound stupid but i'll ask anyway. I took one cable off of battery to clean corrosion and after putting it back, it wont start. All start up test on dash seem to be Ok but it won't crank. Does the key need to be reprogrammed, because it was in ignition when i took the cable off.

Thanks for the help

 

my 2001 e320 will not start. or the key goes in but will not turn.water was spill by the ignition before this

 

water spilled by ignition? what you spilled water on the dashboard? you need to check the battery voltage. make sure that is sufficient before going any further. low voltage can cause the key to not turn.
leave the key in the ignition for a few seconds before trying to turn the key. see what happens.

 

never leave the key in the ignition when reconnecting the battery. i have seen keys go bad because of this. especially on older 1998-2005 MLs

 

Hi, I got 1998 E320 sadan. My problem is almost like yours.. My key can lock and unlock the car but can not turn to start the car. I tried to leave it in the ignition for a night but it still does not work. Is my key just turn bad for no reason. By the way, this key is the one I have not use before because my wife always use hers. Please help

 

seems like none of the given suggestions work, the key goes in but still will not turn, the alarm is not working the trunk remote from the key also not working the key is kaput. what to do next??

 

if you are sure the car battery is good. then sounds like a bad remote. but when you switch on the headlights do they come on? you siad you cant pop the trunk from the inside swich? still sounds like battrey problem to me.sometimes a jump start just isnt enough.

 

I was going to come in here ask a similar question. I have a 1998 E320. This is rare right now, and only happens about once or twice a month. When it happens, I can turn the key and the car will start, but will quickly cut off when it's about to idle. I then turn the key back, start it again, and it runs just fine. The key is fairly new at only a year old, and I can't recall if this has happened with the old one. I'm hoping this is just a small problem that isn't leading to a bigger one. Anyone have any idea what is happening? Figured I would ask this here since it's a similar topic, instead of starting another thread. Thanks in advance.

 

Hi, Here's an easy one, I hope. '99 E320 running well until yesterday. No crank/start with either battery or jump. Battery voltage is 9.5v. Will new battery most likely fix problem or will something else need to be reset/replaced? Thanks. A quick response is appreciated. My wifes car and she can't go anywhere. Need to fix it so she can get out of the house and quit bothering me.

 

definatly you need a battery...if its older than 4 years. replace it and get the wife out!