[jiarui6]

Hi everyone, so recently I decide to get my sunroof fix before summer, but after scraping two sunroof from scrap yard, I realize most of the 210's sunroof were stuck. However, I'm not sure if I test it correctly, so here is what I did to test the sunroof:
1. place four corner of the sunroof on jar and keep it level
2. connect the motor with 12v battery, motor click, but not moving (Already test the motor and the motor is working)
3. use manual tool try to open the sunroof, not moving
So my main question is: can I test the sunroof like this? Or are there anyone can open their sunroof without installation? Because I heard somebody said the track need to be flash to make it work (in another word need to be installed to make it work)

 

[khomer2]

You've watched this decent video?

 

[jiarui6]

You've watched this decent video?

Yeah, I watched this and he said it's not gonna open because the track was not flushed or fixed, but considering the spares I grab from the yard do not even slide/tilt 1 inch, I guess the cables are all stuck inside the track just like my old unit (because nothing pops out)?
If that's the case, it seems the stuck and rusty cable is a really common failure, and for now I kind of regret taking it apart...

 

[raymond-]

I rushing and can't focus on the details at the moment but I remember that there was a problematic issue with respect to the cable getting off track. See if this has any useful info for your predicament

 

[khomer2]

Yeah, I watched this and he said it's not gonna open because the track was not flushed or fixed, but considering the spares I grab from the yard do not even slide/tilt 1 inch, I guess the cables are all stuck inside the track just like my old unit (because nothing pops out)?
If that's the case, it seems the stuck and rusty cable is a really common failure, and for now I kind of regret taking it apart...

peanut butter
This is what I use for preventative maintenance

 

[jiarui6]

I rushing and can't focus on the details at the moment but I remember that there was a problematic issue with respect to the cable getting off track. See if this has any useful info for your predicament

haha, I wish this the case, but as nothing pop out and I can’t push that cable out, seems it’s stuck and rust inside the track

 

[khomer2]

haha, I wish this the case, but as nothing pop out and I can’t push that cable out, seems it’s stuck and rust inside the track

kaput. You need to find another one.
not worth fixing if the chain is seized.
Fyi.
for the tilt and the slide sunroofs, there are 2 motors, I recall.

 

[jiarui6]

kaput. You need to find another one.
not worth fixing if the chain is seized.
Fyi.
for the tilt and the slide sunroofs, there are 2 motors, I recall.

Yes, I try to find another one, seems most of them were seized, pulled two already. For w210 there is only one motor, there are two on c class, one for shade one for glass

 

[jiarui6]

peanut butter
This is what I use for preventative maintenance

View attachment 2813126

Btw, did you use it for both track and cable? I don’t know whether the cables are supposed to be lubricant or not

 

[khomer2]

Btw, did you use it for both track or cable? I don’t know whether the cables are supposed to be lubricant or not

Yes, you are correct for the 2motors on c-class, not the e-class.
For the cable too - an old MB tech (retired now) showed me this years ago - he introduced me to peanut butter - rubber glove film on the tracks and he also applied very thin layer to the cable (running cable thru his index finger and thumb when he was servicing these).

 

[raymond-]

I would suggest using a more appropriate lubricant which has a lower freezing point such as a spray lithium grease.

 

[jiarui6]

I would suggest using a more appropriate lubricant which has a lower freezing point such as a spray lithium grease.

Thank you for mentioning that, will do a bit research and see which one is better after found a working sunroof.