mbfoup

I noticed something that looks odd to me:

1. If I walk to my locked and parked car (key in pocket) and touch the door handle then it unlocks immediately

2. When I stop the car, park it, exit it and then touch the door handle it does not lock (or respond) right away. It seems I have to "rub it" for a while to make it lock. It behaves the same if I wait a bit (10 sec) after I close the door, stand next to it and then touch the handle.

That seems annoying. Anyone seeing this? Since it unlocks right away then it cannot be a "sensing" issue. It seems to be a software issue or something that needs to be programmed differently, unsure. Thanks.

park423

I have the same issue

mbfoup

Thanks. Did you also see my "Airmatic and beeps" thread? Do you sometimes hear a faint one-sec whistling sound when airmatic is adjusting? Thanks.

ttoE550

It's funny that my wife has that problem -- she cannot lock my car probably 80% of the time. Without me moving at all (I have the key), my 4-year old daughter can reach up and lock it for her each and every time -- same sensor. It never fails to lock for me, no matter which sensor I use.

I wonder if moisturizers or something similar might affect it?

MCF

So you have to stand around for 10 seconds after getting out of the car in order to lock it!? That sux (especially in bad weather).

mbfoup

Well, I have to rub it (does not seem to matter if I wait). It's just that a simple touch is needed to unlock but a rub (3 sec to 8 sec) seems required to lock it.

MCF

So help me understand. If you have keyless go (I did not get it because I don't trust it - keyless go and lack of round fog lights is why I decided against P2) and you shut car off and exit the car, the car won't lock itself automatically? It doesn't sense that the keyless go 'card' has 'exited' the car?

swebber

My 2011 E550 does not have that problem. It locks as soon as I touch the sensor on the door knob.

My 2008 S550 was not as responsive. Sometimes I would have to try several times to get it to lock, sometimes it would work the first time.

park423

Try switching to your other key, I did and it seems to work better, maybe a battery issue and yes, you do hear air release from the airmatic

kingofire

I have a 2010 E350 but I don't have that problem. I hardly even have to touch the sensor and it locks. Time to put the smack down on your E550. I'd be pissed.

mg-E550

have 2010 e550with keyless go and p2. I dont have that issue. Only time I ever have an issue with sensory is if key is im same pocket as a lot of other crap (kostanza wallet)

ttoE550

One thing I forgot about: When I first bought my car, I had trouble getting the car to lock. Mentioned it to the salesperson when I was there for another reason. He pointed out that the way I was doing it had my other fingers near the unlock sensor -- this apparently confused the car, and it would do nothing. Since then, I've done it so just one finger is extended, and I have had zero (absolutely zero) problems.

I just thought I'd mention this. I doubt it is the problem -- it is certainly not my wife's problem as I described above -- but one never knows.

Beausoleil

It senses the key has left the car or it would refuse to lock but the user is still required to tell the car to lock by touching the outside of the handle (with the back of the hand, for example). It's not designed to just lock as you walk away. Similarly, it doesn't unlock as you approach but when you touch the inside of the handle as you naturally would by grabbing it.

hyperion667

zero problems here, couldn't be happier.....

good luck

LRM1

I have no issues like described it always locks when a so much as go near the outer handle.

I did notice that with the back doors, because of the angle of the handle, I sometimes seem to hit "lock" before it unlocks accidentally.

mbfoup

I will need to look at how I use the feature. I read the manual and it says to unlock by touching the inside and lock by touching the outside. Will try today.

MCF

Ok thanks!! I don't think it would be an issue for me, but I could possibly see my wife (it's her daily driver) walking away from the car and forgetting to lock it by touching the door handle. That is why I like her having the keyfob and being able to lock/unlock the car from a distance. Also seems safer to be able to unlock the car from a distance at night as it lights it up and you also have the panic button with the key in your hand. With the keyless card in purse or whatever, you would have to search for it before you could hit panic button. Can you lock/unlock from a disstance with keyless?

Benzinini

Mine seems to work fine. The only annoying thing with the keyless go for me is when I'm washing the car with the key in my pocket or nearby the water spray from the hose constantly locks and unlocks the car when the handles are hit, so end up leaving key at a far enough distance and hope I dont forget where I left it.

mbfoup

All right, I had been using the locking feature inappropriately by touching both the outer and inner handle at the same time (closed hand on handle).

The funny thing is that neither the car salesman nor the MB service advisor showed me how to use it properly. The MB service advisor explained that there was a "delay" and that was expected...

Obviously, as soon as I touch the outer part of the handle the car locks right away. So it works fine. And yes I can still lock/unlock at a distance using the remote. However, I don't know if I can set the car to auto-lock itself as I exit the car and walk away, I could not find anything in the manual regarding that.

LaicepsYdobon

The way it was explained to me was that to lock the car just touch the little rectangle found on the handle. At first I kept on grabbing the handle and touching the rectangle with my thumb and of course the car would not lock. Now I just poke at it with my index finger and no problems.

Beausoleil

Good to know it works. The problem with locking being automatic (it has been tried) is that you would often not be convinced it really happened. Far better to have to perform a positive action than develop OCD constantly returning to check. And if unlocking were also automatic, you would never be sure the car is locked when you walk away and if you went back to check it would be unlocked by the time you got there. It would be like Candid Camera!

hyperion667

hehe, yeah me too.....but it doesn't bother me....I LOL because
I know my neighbors are thinking ....

'he's washing his car AGAIN??'

hehe.....

Johnny Mo

I've actually had the car lock/unlock itself while I am washing it - both with the sponge and with just the stream of water from the hose. Once in a while I have the same issue where it will lock quickly, but then the unlock will take a few seconds or touches to happen.

LRM1

I was told (and use) the whole outer part of the handle. The little square was supposed to raise the windows if they are open. I haven't tried that yet.

hyperion667

you can also raise the windows with your lock button by holding it aimed at the door....
it's sweet.........