Canopy door

1885 Views 4 Replies 3 Participants Last post by netsky199, 2 mo ago

Andy P

Discussion Starter · Feb 26, 2022

Hi folks
I have an intermittent fault with my glass canopy door swinging open when driving. It has the touch sensitive button to open. I can shut it firmly and check it is secure but it opens as it pleases whilst driving. It has started doing it more frequently now. Any ideas on what to check or look for

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MattCA

· #2 · Apr 19, 2022

Andy P said:
Hi folks
I have an intermittent fault with my glass canopy door swinging open when driving. It has the touch sensitive button to open. I can shut it firmly and check it is secure but it opens as it pleases whilst driving. It has started doing it more frequently now. Any ideas on what to check or look for

Hi Andy. Sadly this is one of many faults with the truck. At least yours opens, mine once did, but it’s so tight now it’s grinding away at the nylon tailgate liner, and you need a finger under a corner to wriggle it open. Mine used to pop open at night randomly, setting off the car alarm. Took to MB on a number of occasions and they have no idea what to do about it. One guy on another forum got his whole canopy changed, but didn’t say if that helped later. They don’t make the UK handed canopies now, so you’ll have to make do with a LH drive model, with the opening window onto the road. That’s not a big deal as mine was sold to me like that, and to be honest I’ve not needed to go into that window parked by a busy road.
Sorry not to be more positive on the point. I have the same push sensitive lock as you. In winter, when frozen, give it a good bump all the way round on the outside, where the rubber seal sits on it. This breaks the frost and you can open the window easily, without ripping the rubber.👍

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Andy P

Discussion Starter · #3 · Apr 19, 2022

MattCA said:
Hi Andy. Sadly this is one of many faults with the truck. At least yours opens, mine once did, but it’s so tight now it’s grinding away at the nylon tailgate liner, and you need a finger under a corner to wriggle it open. Mine used to pop open at night randomly, setting off the car alarm. Took to MB on a number of occasions and they have no idea what to do about it. One guy on another forum got his whole canopy changed, but didn’t say if that helped later. They don’t make the UK handed canopies now, so you’ll have to make do with a LH drive model, with the opening window onto the road. That’s not a big deal as mine was sold to me like that, and to be honest I’ve not needed to go into that window parked by a busy road.
Sorry not to be more positive on the point. I have the same push sensitive lock as you. In winter, when frozen, give it a good bump all the way round on the outside, where the rubber seal sits on it. This breaks the frost and you can open the window easily, without ripping the rubber.👍

I took the button for the side window at the front of the cab and refitted it to the rear glass door and covered the hole with a blanking plate. The rear door now works as it should. I carefully cut the sealed base plate from the faulty switch to get inside it. I found a small micro switch soldered onto a small circuit board and it is this switch that is faulty. I know the engineer in our local tv repair shop and will get him to replace the faulty microswitch. As for the back door catching i removed my door and hindges N with a small round file elongated the holes which allowed me to refit the door slightly higher up and now no longer catches, it wasn’t a hard job but easier with someone to help hold the glass

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MattCA

· #4 · Apr 20, 2022

Andy P said:
I took the button for the side window at the front of the cab and refitted it to the rear glass door and covered the hole with a blanking plate. The rear door now works as it should. I carefully cut the sealed base plate from the faulty switch to get inside it. I found a small micro switch soldered onto a small circuit board and it is this switch that is faulty. I know the engineer in our local tv repair shop and will get him to replace the faulty microswitch. As for the back door catching i removed my door and hindges N with a small round file elongated the holes which allowed me to refit the door slightly higher up and now no longer catches, it wasn’t a hard job but easier with someone to help hold the glass

Hi Andy, you seem a proper hands on guy to do that. I wouldn’t have had a go at the electrics, although I’d have done the hinges, as you describe. To be honest as the truck is still in warranty I thought why the hell should I do it, I’m busy enough anyway.
Glad you’re fixed up though👍

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netsky199

· #5 · 2 mo ago

Andy P said:
Hi folks
I have an intermittent fault with my glass canopy door swinging open when driving. It has the touch sensitive button to open. I can shut it firmly and check it is secure but it opens as it pleases whilst driving. It has started doing it more frequently now. Any ideas on what to check or look for

the problem is the foam seal which goes in between the body and canopy. When the foam collapses the adjustment of the canopy is then out of align. The button on the canopy then fails as the back window is not lined up with the catches. There is a recall for new seal which adds rubber blocks at the rear end. More that likely you will need a new window as the button/barrel does not come separate.

new seal and new button/barrel will fix all the canopy issues.

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