C5 II broken heater mix flap - NOW WITH PICS

[triumphtoledo]

Wifey's new (to her) 2005 C5 II VTR 2.0-litre petrol is freezing her out.

It is fitted with the bi-zone climate control and the driver's side started blowing cold air only today, regardless of the temperature setting. The passenger side is working fine. The air distribution flaps work on both sides with no problem.

I have hooked the system up to Lexia - no faults found. I have tested both air mix motors and they complete their test cycles fine with the engine running. Yet, the air is still cold on the driver's side. No grinding or graunching noises are going on during the tests.

I am aware that the C5 I (2001-2004) is prone to chewing the cog at the end of the mixer motor and Citroen had a modified motor but does anyone know if the C5 II is afflicted with the same problem?

My second question is that would the repair motor with the longer shaft (6447 TK) be suitable for our C5 II? the RP number is: 1280.

Looking forward to the voices of experience!

Happy New Year (brrr!!)

Rob

[coastline taxis]

Although its not as bad as the mk 1 the mk 2 is prone to the failure. weve noticed its normally around the 100k mark they go. And it dosnt show up on lexia because the motor still turns and reports back that it has completed its cycle. Time to start stripping the dash

[Clogzz]

RP number 1280 isn't recent or likely, say 12800.

viewtopic.php?t=32780

viewtopic.php?t=36678

viewtopic.php?t=37149

http://www.aussiefrogs.com/forum/showthread.php?t=89911" onclick="window.open(this.href);return false;

[triumphtoledo]

Thanks for the info guys. I am attacking the car now...

You are right, the RP number is actually 10280.

The links are useful but they refer to the C5 I and not the II. I think the facelift car has a different heater box but can anybody confirm?

R

P.S. Just got the motor out; cog is intact, as is the shatf spline... About to test the motor with Lexia.

[triumphtoledo]

Well that was an interesting, if unfruitful, job. Here are some pics for the curious…more questions below:

This is the C5II type of motor, which I think is different to that of C5 I.


The cog on this motor is fine:


This is where the motor bolts to, with the knee airbag removed.


The circled section is where the motor cog enters; the broken shaft is pushed into its aperture further than it should.


View of the heater box with the radio and heater controls removed. Is it possible to split the box from within the car via the passenger side and remove the flaps that way?


After a spot of Internet scouting, the C5 II’s heater box looks very similar to that of the Peugeot 407. Can anybody confirm this is the case or should I visit an optician soon?

Anyway, after the knee airbag was removed, the driver’s side heat flap regulator motor came off; access is very tight though. If the box is the same as the 407, access appears to be even worse on the C5 II, thanks to the fascia design.

The motor’s 5.5mm bolts were not easy to get to, not helped by a hollow plastic tube riveted at the centre console and adjacent to the knee airbag, being in the way. The tube simply carried wires and was not an air duct.

In my case, the motor was fine. Once hooked up to Lexia, its shaft turned slowly and completed its two cycles without any problem. I gripped its end cog tightly by hand and it was strong enough to overcome finger pressure and so I have to presume it is OK.

I also discovered that, even when the motor is disconnected, Lexis will still confirm that the actuator test is successful, which seems a bit strange and backs up ‘Coastline Taxis’ tip – thanks for that!

Unfortunately for me, it appears that the internal flap has sheared somewhere along its shaft, buried deep within the housing. Turning the end of the shaft manually did not change the cold to hot air output at all and then I pressed it is a little too much and the broken section disappeared within the bowels of the heater box.

So, I gave up. I presume the only way is to remove the fascia and split the dash, assuming the heater is the same as the 407. Or, is it the same as the C5 2001-2004? Does anybody know? Also, is there a way of replacing the flaps without removing the fascia, which I presume involves taking the steering column off as well.

Does anyone have some insider knowledge that could help further the cause?

Rob

[triumphtoledo]

**Bump**, surely somebody must know?

R

[citronut]

if you send me the last 8 digits of your chassis/VIN No. i will check across citroen and pug for model compatibility,

were are you located, as i know of a very good breakers they had a selection of C5's and various pugs in the last time i was there,

WOODGATE & SON
High Halden ( just above Tenterden )

01233 850303

[triumphtoledo]

Aww, thank-you so much. Chassis number is 76662390.

For the 407, Peugeot has an uprated flap kit, part number 6480E3 for the dual zone climate control. Is this the same for the C5?

This guy here (" onclick="window.open(this.href);return false;) shows the problem pretty well, although I do not think there is enough room on the C5 to hack a piece out of the heater box and I am pretty sure that the box will split. Again, can you confirm this?

Thanks again,

R

[citronut]

service citroen does not show a break down of the heater unit/box,( no exploded drawing )
so i assume the internal components are not available separately,

that part No. brings up a tech document regarding the heater fault, and not an actual part,

[triumphtoledo]

Thanks Citronut,

The plot thickens... the part number is certainly referencing the Peugeot flap replacement kits as the video shows.

is teh C5 II heater box the same as the 407? Or for that matter, the the C5 II heater box the same as the C5 I?

What does the tech document say about the heater box?

R

[triumphtoledo]

**bump**.

[citronut]

Thanks Citronut,

The plot thickens... the part number is certainly referencing the Peugeot flap replacement kits as the video shows.

is teh C5 II heater box the same as the 407? Or for that matter, the the C5 II heater box the same as the C5 I?

What does the tech document say about the heater box?

R

on entering that part No. ut takes you straight to tech document opening page which from there on is a payed for service, so i did not go any further sorry

ps.
i have also just run it by pug service box and it doesnt come back with any parts

[lakanooky2]

Any updates on this please

[lakanooky2]

Any updates on this please

Little bit of further investigation and i came up with this on my MK1 facelift 2005
1/ Passenger side works great
2/ Drivers side gives out a bit more heat when the button for the recirculate is pressed, go back to normal and cold again.
Any further information would be great or does my problem relate to the above old thread

[citroenxm]

Its with sad news I should just inform you that Citronut who was helping is no longer with us sadly. Ive not had an issue with my heater box yet on mine so I cant help you much either at this point. It might have to be a bite yhe buillet and remove the facia and have a closer look job now.