Front Air-Cap/ Wind Deflector staying up - E250 Cabriolet

[WAM 9]

Looking for ways to solve this problem.

The front air cap is staying up and as I try to retract it will come down and then returns to the raised position.
I have taken it to Mercedes dealership only to be told they have checked the fault on their system but it doesn't appear to be a software problem, they could only offer to replace the unit @ £1,300 .

Has anyone had this problem? found a way around it? is it possible to disconnect this so it remains down? can I remove a fuse?

Appreciate any help.
Thanks

 

[WAM 9]

• #1

Looking for ways to solve this problem.

The front air cap is staying up and as I try to retract it will come down and then returns to the raised position.
I have taken it to Mercedes dealership only to be told they have checked the fault on their system but it doesn't appear to be a software problem, they could only offer to replace the unit @ £1,300 .

Has anyone had this problem? found a way around it? is it possible to disconnect this so it remains down? can I remove a fuse?

Appreciate any help.
Thanks

 

[Blobcat]

Hello and welcome,

I've merged your threads as there's no requirement to post across multiple sections.

Don't have many air-cap issues reported on the forum, worth a search though

 

[John Laidlaw]

Welcome
sadly this is a thread from a (previously) regular member.
It does seem that there IS a software fix, so maybe you need to go to someone who will actually try it (Mercedes Independent specialist- we can recommend if you post your location)

E350 2011 Cab - Air Deflector Not going down above windscreen

Weird one this. First time of opening this year was a couple of weeks ago , put the top down and put the air deflector up at front ... all fine .. Stop car put the hood back up and deflector tries to go down but gets half way and goes back up ... tried a few times to get it to go down by...

forums.mercedesclub.org.uk

 

[WAM 9]

Welcome
sadly this is a thread from a (previously) regular member.
It does seem that there IS a software fix, so maybe you need to go to someone who will actually try it (Mercedes Independent specialist- we can recommend if you post your location)

E350 2011 Cab - Air Deflector Not going down above windscreen

Weird one this. First time of opening this year was a couple of weeks ago , put the top down and put the air deflector up at front ... all fine .. Stop car put the hood back up and deflector tries to go down but gets half way and goes back up ... tried a few times to get it to go down by...

forums.mercedesclub.org.uk

Hi great thanks would appreciate a Mercedes Independent specialist contact please - I am based near Nantwich in Cheshire CW5 6EG thanks

 

[John Laidlaw]

Hi great thanks would appreciate a Mercedes Independent specialist contact please - I am based near Nantwich in Cheshire CW5 6EG thanks

I've not used these myself, but I've heard good things https://amgcheshire.com/
If you wanted to travel a little further to Warrington, you could use http://www.mercedesservicingwarrington.co.uk/about-mbtech-warrington

 

[NevMerc]

Looking for ways to solve this problem.

The front air cap is staying up and as I try to retract it will come down and then returns to the raised position.
I have taken it to Mercedes dealership only to be told they have checked the fault on their system but it doesn't appear to be a software problem, they could only offer to replace the unit @ £1,300 .

Has anyone had this problem? found a way around it? is it possible to disconnect this so it remains down? can I remove a fuse?

Appreciate any help.
Thanks

Hi, very simple fix. When deflector is in its extended position, lubricate all the hinges with 3 in 1 Mist oil. These devices are fitted with a Pinch motor. This changes the polarity if it detects any resistance. I did it on mine, now works perfect. A bit cheaper than £1300 + labour. Top tip, carefully lubricate all the hinges on Sun roof. It does dry out through time.

main dealer, will simply replace the whole unit.

 

[Amar Singh]

Hi. I have a 2013 E250 and I'm experiencing the same issue.

The windscreen deflector stays in the open position. Strangely it goes all the way down and immediately back up when I lock/unlock the doors or start/stop the engine.

The light also stays on. I don't believe it's a mechanical issue as theres no obstructions and it literally goes all the way down for a good second before it goes back up. Tried lubricating all the hinges and everything looks super clean/obstruction free.

Has anybody else experienced the same and found a resolution? I would rather disconnect it somehow than to replace the entire unit.

 

[NevMerc]

Hi. I have a 2013 E250 and I'm experiencing the same issue.

The windscreen deflector stays in the open position. Strangely it goes all the way down and immediately back up when I lock/unlock the doors or start/stop the engine.

The light also stays on. I don't believe it's a mechanical issue as theres no obstructions and it literally goes all the way down for a good second before it goes back up. Tried lubricating all the hinges and everything looks super clean/obstruction free.

Has anybody else experienced the same and found a resolution? I would rather disconnect it somehow than to replace the entire unit.

There is a series of fine roller bearings. Spray oil into them and it will usually sort the issue. It is operated by a pinch motor for safety. Slightest resistance (dirt, dust) will send it back up again. Happened to me, I'm now aware of it and it works perfect. Mercedes will just replace motor and the same thing will happen again

 

[Amar Singh]

Hi @NevMerc. Thanks for the prompt response.

I've tried spraying oil into the hinges but its made no difference. I have to admit the hinges look super clear of any dirt/debris.

The wind deflector appears to drop all the way down for a good second and makes no noise before it goes back up; which makes me think its not resistance related and possibly a software issue as suggested above.
It also strangely goes in-and-out when locking or unlocking the doors.

Is it possible for the vehicle to develop a software bug/glitch without any recent work or battery issues?

 

[Bilywiz1]

• #1

Looking for ways to solve this problem.

The front air cap is staying up and as I try to retract it will come down and then returns to the raised position.
I have taken it to Mercedes dealership only to be told they have checked the fault on their system but it doesn't appear to be a software problem, they could only offer to replace the unit @ £1,300 .

Has anyone had this problem? found a way around it? is it possible to disconnect this so it remains down? can I remove a fuse?

Appreciate any help.
Thanks

Mine on 2011 version kept cycling up and down when stopping the car. Quoted £1200 for new one plus fitting! Disconnected the plug above the rear view mirror. Stops the cap operating but still allows the deflector to raise when the button operated.

 

[Bilywiz1]

Disconnect at connector above rear view mirror. Rear deflector will still function on button.

Looking for ways to solve this problem.

The front air cap is staying up and as I try to retract it will come down and then returns to the raised position.
I have taken it to Mercedes dealership only to be told they have checked the fault on their system but it doesn't appear to be a software problem, they could only offer to replace the unit @ £1,300 .

Has anyone had this problem? found a way around it? is it possible to disconnect this so it remains down? can I remove a fuse?

Appreciate any help.
Thanks

 

[milesy]

Looking for ways to solve this problem.

The front air cap is staying up and as I try to retract it will come down and then returns to the raised position.
I have taken it to Mercedes dealership only to be told they have checked the fault on their system but it doesn't appear to be a software problem, they could only offer to replace the unit @ £1,300 .

Has anyone had this problem? found a way around it? is it possible to disconnect this so it remains down? can I remove a fuse?

Appreciate any help.
Thanks

hi remove front interior light cowel above that is wire going to motor for wind deflecor ,right at top connecter, get it loose and when retracts pull off connetor it will stay down permanently ,quick fix maybe there is contacts need cleaning somewhere on motor but of no use anyway does not affect anything else no warning light save youself 1500£ at mercedes

 

[ian lunn]

• #1

Looking for ways to solve this problem.

The front air cap is staying up and as I try to retract it will come down and then returns to the raised position.
I have taken it to Mercedes dealership only to be told they have checked the fault on their system but it doesn't appear to be a software problem, they could only offer to replace the unit @ £1,300 .

Has anyone had this problem? found a way around it? is it possible to disconnect this so it remains down? can I remove a fuse?

Appreciate any help.
Thanks

I have the same issue and plan one attempting to strip the unit down as in the link below, not had time as yet so whe it was on the down stroke i assiisted by pulling it down as well. took couple attempts but eventualy it stayed down at wich point i switched it off untill such time I can do it without rushing.

E Class W207 A207 AIRCAP not retracting | Bodywork

Hi All, I have an E500 Convertible and the aircap has started to play up. when retracting it gets about half way closed and then extends again. have searched all over but all the reports are go to Mercedes and they will replace for over £1000 it would seem. Well as it was a nice day I took a...

forums.mbclub.co.uk

 

[milesy]

they all have problems ,to disable take out front interior light ,you can see wires one at top connects to motor just one wire, when it retracts pull off connector at just right moment ,will stay in and lots cheaper than going mercedes ,what use are they unless you have a toupe ,makes no difference to car no warning lights