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[SOLVED] Mobile deflector faulty

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Radox   
Tue Nov 12 2019, 11:54am
Joined: Aug 27 2019
Member No: #4044
Location: Bad Bergzabern
I need some help. Today, after driving for about an hour on the highway, I parked the car and noticed that the deflector on the boot lid hasn't retracted (it was in the highest position, which is only activated over 125 km/h). That was pretty strange and I tried to push it down, but it wouldn't budge. About 30 mins later, I started the car and drove away and then the SERVICE light came up, together with a message "Mobile deflector faulty". After again driving for about an hour, I parked the car and it still stays in the highest position without retracting

Do you have any ideas what could be wrong? I have absolutely no time to visit dealers in the next weeks and leaving the car at a dealer shop is not an option. Can I wash the car with the deflector elevated or the water will damage the exposed components below? Will further driving with the deflector up damage it somehow?

C6Dave   
Tue Nov 12 2019, 02:29pm

Joined: Oct 01 2009
Member No: #1
Location: Northumberland
Washing won't hurt it but if you have some WD40, Ferrosol or similar give it a spray, driving should be OK.

Deflector can be activated by pushing the right hand stalk down immediately after switching the ignition off so maybe you caught it?

Don't try 'forcing' it down.

Check the fuse in the boot:



It's F4 15 Amp
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2 User said Thank You to C6Dave for this Post :
 Radox (12 November 2019) , cruiserphil (13 November 2019)
Radox   
Tue Nov 12 2019, 03:24pm
Joined: Aug 27 2019
Member No: #4044
Location: Bad Bergzabern
Thanks for the info. Will check that damned fuse later. Where exactly do I need to spray the WD40? At the hinges? Or at the cylinder in the middle? I happen to have a bottle lying around and will give it a try.
321dave   
Tue Nov 12 2019, 03:31pm
Joined: Sep 09 2011
Member No: #614
Location: Dublin
Radox wrote ...

Thanks for the info. Will check that damned fuse later. Where exactly do I need to spray the WD40? At the hinges? Or at the cylinder in the middle? I happen to have a bottle lying around and will give it a try.



I spray the hinges once a month every month. Stuck once on me, but never since!
2 User said Thank You to 321dave for this Post :
 Radox (12 November 2019) , cruiserphil (13 November 2019)
C6Dave   
Tue Nov 12 2019, 03:34pm

Joined: Oct 01 2009
Member No: #1
Location: Northumberland
321dave wrote ...


I spray the hinges once a month every month. Stuck once on me, but never since!


I spray Ferrosol 'everywhere'
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Kaloteck   
Tue Nov 12 2019, 04:54pm
Joined: Apr 25 2013
Member No: #1271
Location: Warsaw
I'm curious… You guys really feel the difference, driving with the deflector up or down?
Radox   
Tue Nov 12 2019, 06:09pm
Joined: Aug 27 2019
Member No: #4044
Location: Bad Bergzabern
You guys are geniuses! I sprayed the stuck deflector with WD40 (very amply might I add), then drove off and ... it closed. Now it works perfectly again. Thank you very much!
C6Dave   
Tue Nov 12 2019, 06:45pm

Joined: Oct 01 2009
Member No: #1
Location: Northumberland
Kaloteck wrote ...

I'm curious… You guys really feel the difference, driving with the deflector up or down?

Honestly, no, I can't feel any difference even when driving in France where it can legally be fully deployed unlike here in the UK.

The suspension at that speed with the spoiler fully deployed has already lowered the car by 15 mm "to improve stability by lowering the centre of gravity also helping to cut fuel consumption by reducing the CdA of the front area and reducing sensitivity to side winds" (according to a Citroen Press Release)

The 2.2 only has a small fixed lip on the boot lid and no one seems to complain about the handling at motorway speed limits so is an 'active' one actually needed?

It would be interesting to see any 'wind tunnel' tests Citroen did on it IF they were available.
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C6Dave   
Tue Nov 12 2019, 06:48pm

Joined: Oct 01 2009
Member No: #1
Location: Northumberland
Radox wrote ...

You guys are geniuses! I sprayed the stuck deflector with WD40 (very amply might I add), then drove off and ... it closed. Now it works perfectly again. Thank you very much!

Buy some Ferrosol - Click Here - if you can in your country, it's much more useful than WD40
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2 User said Thank You to C6Dave for this Post :
 Radox (12 November 2019) , cruiserphil (13 November 2019)
Fraunie   
Wed Nov 13 2019, 07:25am
Joined: Dec 09 2018
Member No: #3763
Location: Stockdorf
I would think the deflector comes into play when you are going over 100 mph (or so).

I remember that the first Audi TT (similar round rear end) hadn't a deflector and some were flying off the the Autobahn...
1 User said Thank You to Fraunie for this Post :
 cruiserphil (13 November 2019)
Radox   
Wed Nov 13 2019, 09:49am
Joined: Aug 27 2019
Member No: #4044
Location: Bad Bergzabern
Fraunie wrote ...

I would think the deflector comes into play when you are going over 100 mph (or so).


You are completely right. For all out there who think that the deflector is just a gimmick - I have several times driven the C6 with over 200 km/h (that's about 125 mp/h) on the Autobahn here in Germany. That's pretty fast, yet the car feels incredibly stable and easy to control. I think a lot of the credit for this goes to the rear deflector, because when I drove my "deflectorless" Ford Focus with about 180 km/h it felt as if I was about to fly off the road
3 User said Thank You to Radox for this Post :
 C6Dave (13 November 2019) , eke (13 November 2019) , cruiserphil (15 November 2019)
Tjensen   
Wed Nov 13 2019, 02:34pm
Joined: Jul 17 2012
Member No: #954
Location: Bergen
I spray the hinges and mechanism with thin spray and lithium grease 4-6 times a year. The deflector will "self adjust" after it has been stuck for a period (ice and snow, dirt). Mine was stuck open for a short period after I got the car, but never after I started the simple maintenance.
1 User said Thank You to Tjensen for this Post :
 Radox (20 November 2019)
joopajaa   
Wed Nov 20 2019, 07:58am
Joined: Sep 06 2017
Member No: #3261
Location: Byroslavia, FIN
Not sure if this is relevant but I put a switch to the fuse inside to the trunk to stop the wing from moving when its freezing temperatures - to avoid any problems with snow and ice on the mechanism. So far so good - will be back "online" in April again...
5 User said Thank You to joopajaa for this Post :
 cruiserphil (20 November 2019) , C6Dave (20 November 2019) , mtee (20 November 2019) , 321dave (21 November 2019) , Radox (22 November 2019)
C6Dave   
Wed Nov 20 2019, 11:16am

Joined: Oct 01 2009
Member No: #1
Location: Northumberland
joopajaa wrote ...

Not sure if this is relevant but I put a switch to the fuse inside to the trunk to stop the wing from moving when its freezing temperatures - to avoid any problems with snow and ice on the mechanism. So far so good - will be back "online" in April again...

Not so much an issue for us in the UK but a very good idea for those Nordic country owners
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