Air con problems

Problem with your Megane? Can't find an answer? Workshop manuals and technical notes are in here.

Moderators: q292u, Ray, AndyAdmin, Stranger

__spc__
Learner Driver
Posts: 76
Joined: Mon Jul 30, 2007 6:58 pm
Location: Bridgend, UK

Air con problems

Postby __spc__ » Mon Apr 07, 2008 8:18 pm

Hi,

I've had my car from new (4yrs ago last December). In the third year of ownership, I noticed that the air con wasn't getting as cold as it should. During one of the several visits to the service department, I had this checked over and was told that it was cooling just fine. Ho-hum. (And since that time I've never really been convinced that this was the case...)

Still unhappy, I was told on a further visit to the dealer that the air con system needed re-gassing (because I hadn't used the system during the winter months blah blah).... so I parted with £100 for the pleasure of a re-gassing, and maybe if I convinced myself enough, the air con was now cooling a little better. Maybe...

I then got to thinking that sometimes the air con cooled, and that sometimes it didn't, and I almost got to proving that if the fan was set to zero, THEN the air con button was pressed (and the little orange light comes on), then the air con cooled; if the fan was running and the air con pushed on, it didn't cool. This was never a 100% correlation, so I gave up trying to convince myself of this being a repeatable demonstration of the air con problem....

These days, pushing the air con button seems to do nothing (apart from illuminate the little orange light)!

What can be the problem - I really want to go and see my new dealer (I've moved house) and have this sorted...
5dr 1.6VVT Hatch, Pearl Black Megane Dynamique + Comfort Pack, '53 plate

User avatar
robznet
Advanced Driver
Posts: 395
Joined: Sun Jan 07, 2007 1:58 am
Currently Drives:: Megane 1.5dci
Location: West Midlands

Re: Air con problems

Postby robznet » Mon Apr 07, 2008 8:23 pm

Hi there - simple question, do you hear a click/clunk when you press ths ac button? (you may have to open your window to try this). If no sound is present it may indicate that the pump is not cutting in.

Rob
1.5DCi Dynamique with comfort pack - Antique Green.

__spc__
Learner Driver
Posts: 76
Joined: Mon Jul 30, 2007 6:58 pm
Location: Bridgend, UK

Re: Air con problems

Postby __spc__ » Mon Apr 07, 2008 8:42 pm

Thanks Rob,

I don't recall hearing anything, but I will check tomorrow. How much is a new pump do you know, or can they be fixed, or is there possibly some other reason why the pump might not be cutting on?

Cheers - Steven.
5dr 1.6VVT Hatch, Pearl Black Megane Dynamique + Comfort Pack, '53 plate

User avatar
robznet
Advanced Driver
Posts: 395
Joined: Sun Jan 07, 2007 1:58 am
Currently Drives:: Megane 1.5dci
Location: West Midlands

Re: Air con problems

Postby robznet » Mon Apr 07, 2008 9:28 pm

Hi Steven

I personally don't have a clue on price etc, but I'm sure someone on here will have had a replacement at some time. BTW - I said pump, it will be a compressor I think! Anyway listen for the sound I mentioned, if there is no click further investigation is required!

Rob
1.5DCi Dynamique with comfort pack - Antique Green.

__spc__
Learner Driver
Posts: 76
Joined: Mon Jul 30, 2007 6:58 pm
Location: Bridgend, UK

Re: Air con problems

Postby __spc__ » Tue Apr 08, 2008 6:13 pm

My mistake yes, compressor.

Listened out for the sound tonight - absolutely silent. The orange light comes on, but nothing else happens...
5dr 1.6VVT Hatch, Pearl Black Megane Dynamique + Comfort Pack, '53 plate

User avatar
robznet
Advanced Driver
Posts: 395
Joined: Sun Jan 07, 2007 1:58 am
Currently Drives:: Megane 1.5dci
Location: West Midlands

Re: Air con problems

Postby robznet » Wed Apr 09, 2008 5:43 pm

In that case - I would say it isn't working! Have a search on the forums - I'm sure I have seen the same problem posted somewhere, can't remember what the solution was but well worth your while having a look. Sorry I (personally) can't help you more but you can be sure that someone on here will notice your post eventually!

Rob
1.5DCi Dynamique with comfort pack - Antique Green.

rencar12
Passed Theory
Posts: 38
Joined: Fri Dec 09, 2005 11:42 am

Re: Air con problems

Postby rencar12 » Sun May 04, 2008 11:02 pm

You may have the same problem I "still" have with my 2006 Grand Scenic with Climate Control. I know there are other reasons that your air con may be playing up, but its worth a comment.

After the injection computer recall last year, my air conditioning has packed up about 4 times. The air con comes on, but no click of the compressor. Each time the Renault dealer clears the fault code (df1070) and it works again. It is booked in again to be kick started.

My original posting on this forum is at:

viewtopic.php?f=2&t=5951&hilit=climate+control

There is still no official fix from Renault, other than taking it in to have the code cleared.

I managed to get to see the official word on this and someone on another forum commented it. The workaround doesn't entirely work, which is to leave the system on fan speeds below 4 or in Auto (for climate control):

The injection computer monitors the power consumed by the A/C compressor (in kw) and when it reaches a certain point, the computer believes the compressor is siezing and shuts it down (hence the df1070), this is a safety measure to prevent belt damage and an immobilising breakdown, this is a software problem introduced to the computer when reprogrammed and i believe Renault are working on a fix, they do advise in the meantime that the compressor is not loaded too much, i.e. keep the blower on 3 or lower, this should prevent the fault code recurring, (should).

__spc__
Learner Driver
Posts: 76
Joined: Mon Jul 30, 2007 6:58 pm
Location: Bridgend, UK

Re: Air con problems

Postby __spc__ » Mon May 05, 2008 7:25 am

Thanks for that info.

Summer's approaching, so I'm going to have to book it into my dealer to try and get this sorted. However, the last two days I tried the A?C, it seemed to work perfectly (though still no audible click of the compressor).

Hmmmmm.
5dr 1.6VVT Hatch, Pearl Black Megane Dynamique + Comfort Pack, '53 plate

AlexB
Driving Legend
Posts: 4312
Joined: Tue Mar 22, 2005 8:17 pm
Currently Drives:: Renaultsport R.S.250 Cup

Re: Air con problems

Postby AlexB » Mon May 05, 2008 4:32 pm

I can hardly hear this click (manual control system), but it must exist by the logic of things. The aircon works fine.

One can find the algorithm of its control here:
https://meganedoksi.uw.hu/MEGANE_II/MR364MEGANE1.PDF

It is different for different engines.
AlexB
(no, a different AlexB)

rencar12
Passed Theory
Posts: 38
Joined: Fri Dec 09, 2005 11:42 am

Re: Air con problems

Postby rencar12 » Wed May 07, 2008 6:52 pm

I got fed up with the situation and contacted another Renault garage. They said they'd had 2 or 3 cars in today with exactly this problem. The only solution was to leave the system in Auto and avoid blower positions over 3 (difficult on the Auto system!).

Anyway, rang Renault UK Customer Services and they were very helpful. They knew about it and could see my car was affected. The lady I spoke to said that a fix has now been released on the 28th April 2008 and dealers may need to check the Renault technical system to get the details - this is meant to finally deal with the issue.

In the meantime, she logged the details and gave me a reference number to give the Dealer if I get the brush off about an actual fix.

Hope this helps.

rencar12
Passed Theory
Posts: 38
Joined: Fri Dec 09, 2005 11:42 am

Re: Air con problems

Postby rencar12 » Sat Jun 14, 2008 9:49 am

Following a different software update applied 3 weeks ago, the climate control (a/c) once again failed.

On advice from Renault, they then called in Renault Technical people who visited the dealer and dealt with my car this week. They apparently are travelling across the country to sort this particular issue out.

All is now well after they completely replaced the air conditioning compressor and recoded the computer. The car was out of action for a day.

The air conditioning had been out of action (on and off) for around 8 months following the injection computer recall last year. Only time will tell if this problem reoccurs, but lets hope not!

__spc__
Learner Driver
Posts: 76
Joined: Mon Jul 30, 2007 6:58 pm
Location: Bridgend, UK

Re: Air con problems

Postby __spc__ » Sat Jun 14, 2008 12:46 pm

Well, after thinking my air-con doesn't work, it does! Very cold it is too.

Shame it doesn't work all the time! I can only imagine that it is a faulty switch somewhere in the process...
5dr 1.6VVT Hatch, Pearl Black Megane Dynamique + Comfort Pack, '53 plate

User avatar
terry_mccann
Advanced Driver
Posts: 286
Joined: Tue May 06, 2008 2:49 pm
Currently Drives:: Megane SportsTourer 1.9 dCi 120 PS, 01/2004, Polargrey, Confort Privilege (Partial leather, Alpine 9871RR, 16"-Alloys, 6-speed)
My gallery: http://meganeboard.de/viewtopic.php?t=3437&start=0

Re: Air con problems

Postby terry_mccann » Sun Jun 15, 2008 5:49 pm

I also had this problem that the aircon occasionally did not work. my dealer checked it and found that the magnetic switchthat connects the compressor has hung from time to time. they cleaned it and put some WD40 on it and up to now everything's fine....
Megane Grandtour 1.9 dCi 120 PS, 01/2004, Polargrey, Confort Privilege (Partial leather, Alpine 9871RR, 16"-Alloys, 6-speed)
My gallery: http://meganeboard.de/viewtopic.php?t=3437&start=0


Return to “Problems / Questions”

Who is online

Users browsing this forum: Google [Bot] and 48 guests