i have an 01 c240 6 speed that and i am having trouble turning the key in the ignition, the battery signal isn't super strong in the remote, would getting new batteries in the keys help. Or is this an issue with the sensor. i can still open the doors fine with the remote but turning on the car has become a *****!


Any help would be greatly appreciated

thanks

Alex

my key cant turning on and cant open door also. but when i press the key still got light .. whats going on ?

i have no idea, the fancy sensor deal in the key is more trouble than its worth!

try heating up the inside of the car. it works for me. put a heater in the car let it heat the car for about 10 to 15 min. then try to turn the key.

That should be your 1st step.
I ordered batteries on Amazon.com for both keys for like 5 bucks including shipping.

yeah something similar happened to me. new batteries fixed the problem. They go for $5 at radio shack too if you dont want to wait.

You should be able to use the key in the ignition without any batteries at all! There is an inductance coil in the key hole as well as inside the key itself, and this allows the car to power up the key batteries or no batteries.
So I find it strange that new batteries help.

that is the only thing I dont like about these forums.....people not thinking before they reply. so in turn they arent helpful they are counterproductive to their fellow mercedes enthusiast. please lets not do that here.

this type of question has been posted several times on several different forum but no one provides a REAL solution. for some reason it seems every one eventually goes to the dealer or some high speed mechanic then doesnt inform all other mb forum members what fixed the issue. So please if anyone else fixes the problem then post the FIX!!!

What post are you referring to? Who was counterproductive? The only counterproductive post I see in this thread is the one you just made.
If you were referring to my post then you're just not making sense, because I was trying to help eliminate the idea that it could be a low battery issue.

I have no respect for someone who opts to throw insults via a forum. it screams qualities of an insecure weak individual. so I will not reply in the same manner. Now, lets all stick to the problem and keep our feminine like emotional outbreaks to ourselves. Thank you.

Wooa Mr Newb man.
Hey, your all of 14 posts doesn't entitle you to start telling people what they should do and not do around here.
Chill out, or maybe find a different forum that meets your specific needs,
Newb! Looking through your posts I've yet to see you solve any problems for anyone.
As far as respect, I have no respect for self anointed authorities on forum behavior, who
have no history of doing didly squat for anyone in said forum.
And so far no one has even insulted you....yet. Though I can see it coming like a trainwreck.
Take your crappy attitude elsewhere.

If the problem is not with the key, than it is likely with the EIS.
An expensive part, which needs to be replaced by a qualified mechanic with a Star system. But this guy hasn't even replaced the batteries yet.
And this has been discussed, but it's definitely not DIY if it's the EIS. (electronic ignition switch)

Yet you have done it repeatedly. You are one obnoxious person. Please don't feed this pigeon.

What you say is true,
UNLESS according to my sources (local shop), you disconnect the battery with the key in the ignition. In that situation the 2 codes can get out of sequence with each other and the only fix it to replace the EIS, according to him.
The new EIS comes with codes from MB that are entered into Star diag, and the whole thing is by VIN #.

I'm going to Ignore Mr. 14 posts because, apparently, he has no respect for those who throw insults on a forum - and then after saying that he immediately tries to insult me with the feminine comment. He must be very insecure

Anyway, that seems to be quite a problem if that's accurate. I have to remember that!! You'd think MB would have designed the system to prevent such a possibility. Then again, maybe not...

Jane, you ignorant ****!
I insult your wristwatch, fart in your general direction, and cough on
your shoes you
silly english speaking person!

I've had the key in and the battery disconnected and nothing bad happened.
But according to my guy, it can.

Obviously, I have brought life to this forum and whole lot of attention to the website period. You should all be thanking me. you should all be on your hands and knees, being grateful for the day that I came to join this great forum that we all share with enthusiasm. I have brought not only excitment but have challenged people to challenge themselves without them even knowing it. every single one of you will now think twice before posting and post you will but think you will first. now get off your hands and knees and keep the forum alive. It was and will continue to be a pleasure to converse with you all. we are all grown men and I am proud to say I am a member of a forum that not only unconditionally helps each other but can give and take criticism and drive on. now I will stand up from my laptop and applaud all of you. it has and will continue to be a pleasure.

oh, and mleskovar I know you think that I am cool. its okay. Your probably cool too
although your responses wreak with the smell of someone with a bland character I'm sure that is only your representative. you probably keep it all in then take it out on someone who doesnt deserve it. act like you have a pair. nah, I'm just kidding. it has been a pleasure and contrary to belief with your vast wisdom and over 2500 posts you couldnt resolve this issue with a single post. it took a real forum fanatic to do the job. and btw, with his little c230 he might decide not to show such a crappy car as his tag. sedans only rule the c class. just playin. you girls play nice. and good night gentlemen.

buh-bye marty, you WILL be banned at this rate.

I seriously think this guy has some kind of disorder. Maybe he's bipolar.

acr2001, apparently you didnt get my private message to you, but either way gentlemen have a goodnight unlike some I am not retired, and I have a real job to attend to in the morning. but I assure you that I cannot wait till I am retired. it must be nice huh?

Acr and C230 have it right. You can leave the key batteries on the nite stand and the car will still start. The key has several modes.

1. Radio frequency using self contained batteries. This allows you to open the car from some distance. As the batteries age, you must move closer to the car because the RF signal becomes weak.

2. Infrared light beam operated by batteries. This allows you to roll up the windows and close the sunroof by pointing the red disk on the end of the key toward a small window in the driver's door handle. This will also allow you to roll down the windows and open the sunroof. You must press and hold the proper button on the key for this to occur. This only works when you are close and can see in the car. You don't want to close the window on your Jack Russel.

3. Infrared light beam operated by induced AC voltage from the primary in the EIS (electronic ignition system) to the secondary in the key. This allows you to start the car if the key batteries are dead or gone. The light source in the key is a LED (light emitting diode.) This LED emits light that is not visible to the human eye. It is visible to the photo diode in the EIS and door handle. You can check the relative amount of light by pointing the key at your Nightshot video camera, or many digital still cameras.

The original posters problem might be just a layer of dirt or excessive scratches on the window of the key. Clean the end of the key with a Q-tip dipped in Windex, as well as the red disk in the car's EIS. Don't be sloppy and make it so wet that the dirt is washed into the EIS, just damp enough to remove the layer of dirt that collects there. For scratches, buffing with a soft cloth is about as far as you should go.

For the people who notice that low temperatures cause hard starting, a glance at the SLI (starting, lighting, & ignition) battery in the car is in order. Checking the battery voltage is not the definitive test for a battery, but it is a start, and it can be read by the front CAN and displayed in the MFD (multi-function display.) The battery voltage decreases with temperature, so a marginal battery might not work when it's too cold to lick an outdoor pump handle. You should have the battery checked by a tech with one of these:

http://www.midtronics.com/home/produ...%20Series.aspx

If you call roadside, and a battery is at fault they will change it and charge only for the battery, service is complementary.

+1 - and excellent advice as usual.

May I recommend that you consult this thread as well.

https://mbworld.org/forums/c-class-w...d-weather.html

The two are running in parallel on a very similar issue on almost identical vehicles of similar vintage.

While it may work for you at your Army day job, trying to command forum members here will not yield the same results. You need to tone down your rhetoric. That's an order.

Wow it seems like Martin aka Mr. 18 posts (now) must know everything since he doesnt post anything we want to read and he also has a "real" job to go to. Hmm well then since you have a "real" job I will take a #1 and can you make that a large, thanks.

But back on topic. Whats the average range some of you get with your key and has anyone upgraded to the newer key to resolve the problem?