c230_2k2

Does the sunroof on the 2002 coupes have a one touch close feature?If not, can it be done?

TimmyC230boy

no. They have a 2 touch open feature but you have to hold the button for it to close.
Pretty much sucks.

kompressorchick

mine used to open with two clicks, but after i took it in for service it opens like 2 inches with each click, so when i open my roof i have to basically sit there and click that button for a while, as for closing i have to hold it all the way as well

session

one would think it can be done, as the sedans have one-touch close. it's probably a software issue though.

dswildfire

or rather a button issue, seeing as how there needs to be another contact in front to activate one touch close, otherwise you wouldn't have a gradual close.

session

not exactly a mod i want to attempt, however.

holding my hand up there for 5 seconds is not too bad.

vadim

You can re-synchronize it by pressing the button to open it all the way and holding it in this position for 2-3 more seconds after the roof is fully open. Then do the same to close the roof. Next time you start the car, it should work fine, just like it used to. This has to be done every time after the battery is disconnected.

young

i think the 2 touch fully open isn't so bad. but i also wish it had 1 touch close. the problem is, i don't think there is a sensor or any sort so that it doesn't pinch anything that may be in the way (i think timmy tested that w/ a towel) like the windows do.

do the sedan's moonroofs have that?

christian655321

your sunroof is out of sync, you need to resynch it, its in the manual on page 127 i think.

TimmyC230boy

yeah, it closed as much as it could on a towel. Never tried the windows.

young

if i remember, on the windows, the sensor is on the top of the door frame. on my other car, if you press down on the glass, it stops. correct me if i'm wrong.

Lynn

The windows do have an anti-pinch feature. I have a solar powered exhaust fan that fits in the window. If I use the auto-up, the window goes up until it hits the fan, then reverses.

WebGuyNJ

I love this this car. But what moron decided against one touch close on the sunroof?

session

you're talking about a company that doesn't offer an in-dash cd player standard in a $40,000 car in 2002. don't expect the brightest design ideas.

c230_2k2

i was reading the new broucher for the 03's they have that one touch close...sun roof....

dwang

It can be done, but it's not easy at all. The OEM one touch switches use completely different control boxes and switches. You would also have to add additonal relays and lay additonal wires. Trust me, not worth it!!

You can however try to build it yourself. I have read that people have used a thermal circuit breaker, an automotive relay, a capacitor and a diode (prob 3-5 amp) to accomplish the one touch feature. But this is way beyond my electrical skills.


Dave

MarkL

I've got a C240, and like others have said, it has one touch close. In the past, I've only come up w/ one reason the coupe doesn't have it. I mean, why wouldn't they just use the same components as the sedans? I think it's because of the shades. This is "weak", but, maybe they couldn't decide whether the shades should close during the one-touch operation -- some people might want to leave them open, others might want them closed. If it were up to me, I would want the one touch to close only the glass. If I then wanted the shades closed, I would just hold the button again. On the one-touch open, there's no question. If the shades are closed, of course, they are rolled back first before the glass opens.

Edit: Of course, if they wanted to cover all cases, they could have an option on the "settings" menu to close only the glass or glass and shades.

young

i don't know why. i remember that the older e-class didn't have 1 touch close either and it just had a regular sunroof.

if the new e-class w/ the panoramic roof doesn't have 1-touch close, you might have something there.

dwang

That's because MB completely changed the logistics and control of the control boxes, wires, switches and relays. The old style has about 40-50 wires coming from the window switch panel that go to a central relay (in the trunk) and then, to the window. The newer style has only 8 wires coming from the window switch panel. From the panel, the wires then go to each door where there are 4 separate control boxes (1 for each door). Totally differnent styles of control...


Dave

vadim

To implement an electric "one touch open/close" is a piece of cake, really. You don't have to have an engineering degree for that. However, I don't think it's even "that" complicated with this generation of MB. Remember, there are no wire harnesses in our cars, all devices (switches, sensors, driving motors) communicate with each other over a bus - 2 wires only(!) Hence, synchronization glitches, which are in essence software issues.

If you have a directional switch and the end sensor - you are almost there! Just a little bit of programming needed.

grn300m

WRONG! The 2003 C230 does not have autoclose. It is possible to program the function into the close button, it's just software. It uses FET technology via the multiplex CAN bus, however it really depends how MB decided to set this up. It has to be a parameter setting to allow an auto close function. My bet is that this is not a built in feature, otherwise on the many-many posts on the subject, Lynn or Beullwinkle would have told us how. If there is no parm to set, then it is a firmware change and lots-o-money.

I think that MB did not offer this as a setting because of the multiple stages of the pano-roof. If the roof had autoclose, all the complainers would complain that when the roof is open all the way and the wind noise is too high, pushing the close switch closes all the way and then you have to push the button again to open half way. That would **** me off, however holding the button for 5 seconds or so is very easy. But of course I am pretty buffed, so I imagine all the girly men out there would have a problem holding their punny arm up in the air for 5 seconds.

MarkL

Wow, that's long winded, but I think some of you coupe guys are unfamiliar with the switch on the sedans. I don't think it's just a matter of software. The switch on the coupe does not have the second "click position" when pressing toward "close" that would initiate the one-touch close if it were there. It does have the second "click" on the open position -- I don't have a coupe but I test drove one.

So, the argument above is not true -- you still would have the choice of one-touch close or regular manual close. In my C240 I can either press the sunroof switch to the first position to close it as far as I want, or press it to the second "click" to have it close all the way automatically.

I still think M-B doesn't have one-touch close on the coupe due to the shade design -- they simply took the simple (maybe dumb) approach to leave it off instead of tackling the question of whether the shades should also be closed during one-touch close. That's my opinion.

avlis

I can't buy that. Why is closing more complicated than opening? One touch open first opens the shade...push again and the glass opens 1/2...push again and glass opens full. Why can't the opposite be true? First push and glass closes 1/2...push again and glass closes full...push again and shade closes.

I think there is some other reason why they left it off.

(and I still can't believe there are no MB insiders that read/post this board)

peet

Do any of you that own a coupe have a buddy with a sedan? If so -- try the experiment for us... swap the switch real quick and see if it makes a difference. I know it is a whole assembly, but hopefully the pinouts are the same.

To open the assembly, remove the large light cover, then inside there are 2 retractable latches. Pull those and the assembly should fall out.

P

young

actually, w/out the sensor to see if anything is in the way, i don't want the one-touch close for the moonroof.