SL/R230: Vario roof not working? Might be your Trunk Flap. Easy Fix DIY
Review the beginning of this thread for complete instructions and save yourself a few hundred bucks - good luck!
The kit solved this problem, but it soon broke again. Taking the gearbox apart on the flap motor I noticed that a tooth had sheared off the drive gear from the motor. The gearbox is held together by flimsy plastic lugs so be careful taking it apart - several of mine broke off. The gear is not available as a separate part so had to order a new unit.
Lifting the roof manually in to place, I managed to break off the locator pin on the right side of the roof lock. Its now impossible to manually close the roof lock as the pin triggers a switch in the windscreen frame which releases the hydraulic pressure in the lock. You cant get the pin as separate part so I'm going to try to get one fabricated.
Happy days !
The Best of Mercedes & AMG
you can email be at butchbroome@Hotmail.com and i'll give you my number if you like. I've done several of these for friends as well as myself.
While trying to fish something out from under the passenger seat, I had moved it as far back as possible. Unbeknownst to me, my makeup bag was behind the seat, and is now jammed up against the side of the car; I am unable to determine if it actually was overridden and is stuck IN the track or not.
Of course all function of the seat is frozen, and when I started the engine, a sickening feeling hit me as I smelled that distinct odor of an electrical burn. The next time I started the car a "Seat Restraint Malfunction" message appeared.
I'm hoping against hope that I only blew a fuse; and after determining that fuses #9 & #27 are intact, I moved on to check #41 & #42. However, I am having trouble pulling the cover of the passenger side fuse box. I can see that there are two apparent release clips on the outer side of the box and can readily move them, but nothing else wants to lift or move with gentle nudging.
So, Question #1: Am I on the right track?
Question #2: What's the proper way to lift the cover?
Question #3: Any other ideas?
Last edited by Confusedbubbles; Sep 26, 2014 at 06:01 PM. Reason: Duplication




While trying to fish something out from under the passenger seat, I had moved it as far back as possible. Unbeknownst to me, my makeup bag was behind the seat, and is now jammed up against the side of the car; I am unable to determine if it actually was overridden and is stuck IN the track or not.
Of course all function of the seat is frozen, and when I started the engine, a sickening feeling hit me as I smelled that distinct odor of an electrical burn. The next time I started the car a "Seat Restraint Malfunction" message appeared.
I'm hoping against hope that I only blew a fuse; and after determining that fuses #9 & #27 are intact, I moved on to check #41 & #42. However, I am having trouble pulling the cover of the passenger side fuse box. I can see that there are two apparent release clips on the outer side of the box and can readily move them, but nothing else wants to lift or move with gentle nudging.
So, Question #1: Am I on the right track?
Question #2: What's the proper way to lift the cover?
Question #3: Any other ideas?
Flaps are nice and tight now. Parts were $76.00 cdn at MB dealer.
I was able to get the parts (listed on the invoice as "MA230 750 01 11 104B03 SUPPORTING PLAT") delivered from MB Oxford (UK) for £34.27 inclusive of tax and shipping - ordered on Saturday, arrived Wednesday.
The only tools needed are a 10mm socket wrench and a #30 Torx driver.
It's an idea to remove the electrical connector before disassembling the arm, as it is a fairly heavy assembly and you don't want it falling and putting strain on the wires.
Apart from the rather awkward angles you have to work at to avoid the flap fouling the boot/trunk lid, there were only a couple of snags I came across: the cable-actuated gear rack that operates inside the "supporting plate" part that we're trying to replace at one point retreated back towards whatever it is that operates it. It turned out not to matter; once I had everything back together again, there was a creaking noise when I closed the boot/trunk lid for the first time, which I assume was the mechanism straightening itself out, and happily it worked perfectly.
The other problem was that the new "supporting plate" was a very tight fit with the part it mates to. So tight that I wasn't initially able to get it far enough on for it to fit to the arm component. I stripped off a small patch of tape that was stuck on the end of the actuator cable, and used adjustable pliers to apply gentle pressure to get the parts fully together.
But altogether it was a straightforward job. Just half an hour after receiving the parts I had both sides done and the roof working perfectly for the first time in months! Just what's needed in the current UK heatwave!
I found out why my ABC light was on when I moved the car. Puddle of oil evident on the pavement. Took is to the stealer and the ABC pump is leaking. $5000, to replace. I haven't picked up the car yet and requested that they give me the leaking pump. Thats one expensive pump at a cost of $3500 cdn.
Flaps are tight on the trunk now and top works perfectly.
Thanks to everyone who contributed.
Any suggestions or experience with the gear releasing a flap during the process vs not being tight throughout the process to be an issue?





