Window drop gizmo

[Tony]

Sorry. Don't know the technical term for it, but does anybody know if it's possible to modify the window mechanism to drop when you open the door and shut when you close it. Most of the more expensive Mercs have this and it does add a touch of class - and the doors shut much more quietly and easily. I imagine the cost of the part would be about ten bob, but that fitting might be a bit difficult.

 

[Matt Crooke]

The Astra convertable does this as well!!!

 

[piestore]

window drop

hi
depends on yor model. later clk does this, 129 ,230, 215's if you are talking about clk 208 model the early model can be fitted with later door control module and this does carry out function described

 

[Tony]

Thanks for the replies

Mine's an SLK. Are the door control modules different for each model? I'd hoped that whatever it was that performs this function came from the parts bin.

 

[Spike]

I wish I had this on my pillarless Coupe...about 50% of the time when you shut the passenger door from the inside, the glass doesn't make it under the rubber lip on the body. The work around is to lower the window a centimeter or so and then raise it again. :cry:

Having this on both front doors would mean I dont have to slam the doors as hard as I have to at the moment so I too would be very interested to know if this can be retro fitted to my W124 CE.

 

[piestore]

windows

Sorry guy's

To the best of my knowledge it's not possible on either slk or 124 as these vehicles only have a basic CAN system if any.

 

[Swazi280]

You could always just leave the windows down all the time. This has the added advantage that even if the rain only stops for 30 seconds a week you'll still score a right arm tan top-up. Watch your neighbours froth with envy!

 

[Tony]

A***hole

And you could always keep your opinions to yourself.

By the way, Piestore, what's a CAN system ?

 

[piestore]

window gizzmo

Hi Tony

"CAN" is a digital data bus system that links most of the control modules together ( Area Network) . Normal terms there is a two wire system that links all control modules and enables clever tricks like :-

Rev limiter at 4000 rpm because because traction sytem tells engine ECU that you are not moving.

On the very late 124 ( I think first MB to Have CAN) speed signal from ABS to instrument cluster is Can signal

Its primary function is to enable communication between all Control modules on the car without the need for miles of wire. More relivant to you querie CAN is required for the window gizzmo to tell the door control module that the door is shut and to close the window. Why doesn't it take a signal from the interior light you ask? That would be to simple !!!!!!

Not to be to negative I'm sure a good spark could wire a timed relay to close the windows when the remote locking is operated, on SLK you might even signal window motors from PSE pump but it would have to be a labour of love as labour time would be very high.

 

[Tony]

CAN

Thanks for that Piestore. I always suspected that there would be a reason why this apparently simple mod would be very difficult.

 

[aoborn]

Re: window drop

hi
depends on yor model. later clk does this, 129 ,230, 215's if you are talking about clk 208 model the early model can be fitted with later door control module and this does carry out function described

Hi Piestore
I've just purchaced a late 1999 CLK 430 cab. The drivers door does not seal properly and I have to open/close window. It is not performing the window drop function. should it on a car of this age or was it a later upgrade for the CLK cab??
Regards Andy

 

[guydewdney]

find a clever electronics man...

when door switch is opened - activate window down for 0.5 seconds.(say)

when closed, wait for 1 second, then uP for 1 second

not difficult - just a few 555 timers..


my cl does this - it has to - the seals fail otherwise

 

[Spike]

find a clever electronics man...

when door switch is opened - activate window down for 0.5 seconds.(say)

when closed, wait for 1 second, then uP for 1 second

not difficult - just a few 555 timers..


my cl does this - it has to - the seals fail otherwise

I think your on the right tracks here...if only I knew someone like that withthe time to spare. The only peson I know that is capable is far too busy.

 

[Arnie]

hello,

With regards to droping and raising the window glass, when opening and closing the doors....

My old 3-series beamer coupe did it using a micro-switch in the door lock jamb. Everything to do with central locking and windows was controlled by one box and it could even measure motor current to detect if someone/something was trapped in the windows during a one-touch-close and then it would lower them again to the same place as before. Very clever!

I think that my SL does it in a similar way, without CAN.

The SL uses a half second delay in raising the glass after closing the door, but the BM did it staight away and that worked fine

You cannot use the interior light switch unless you want all windows to drop and then raise together. The circuit should be very simple, as mentioned above, but you will need to work out where the microswitch should go. I think that in some models it is in the lock mechanism in the door. A good deal of time and effort will be required.

 

[jaymanek]

By the way, the convertible CLK doesnt do this. Only some coupes do it such as the 126, 140 etc...

Jay

 

[guydewdney]

spoke to my electronics man - he can do the timer system - but he needs a full wiring diagram for your car - and hes willing to do it - if you are near-ish slough / heathrow...

pm me?