hi there can any one help ive got 06 croma jtd auto prestigio the panaramic roof not responding,also has electric curtain not working ethier i have checked fuses drivers side,two twenty amp fuses both fine i have also followed the manual to reset and still blank,ive never seen it working,any help please,

Had mine nearly 2 years and have not risked trying it, hope I don't need it. Sorry.

The sunroof is very prone to "spring desease" which is due to all the crap ,salt, etc built up/ washed in over the winter. I`ve found the best start is to get the roof open (under cover ) using the manual handle provided in the roof light. While its open give the seal /tracks a good clean out. If it wont close check that the Fly screen!! is fully up , mine didn`t return fully 1st time I tried it and it went into "oh dear someones trapped" mode and wouldnt close.

It`s a small price to pay really its a great car which I can forgive almost anything (bar the engine warning light which comes on because I changed the air filter to a K&N).
Cheers Dino

tarquin1867 said:

It`s a small price to pay really its a great car which I can forgive almost anything (bar the engine warning light which comes on because I changed the air filter to a K&N).
Cheers Dino

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I've recently changed mine to a K&N with no problems at all, have driven 2000 miles since (EDIT: Mine's just a filter element in the OEM box, don't know about yours).

Back on topic, I bought mine at 2.5 years old so still had some warranty. I had the sunroof mechanism and motor replaced (which is a huge job - I think they took the windscreen and headlining out to do it), and it's still stiff and sometimes needs a helping hand to close. I've decided not to worry about it - as long as it doesn't leak (and it doesn't) then I'm very happy to have the glass area alone.

The blind motor seems to be very related to the sunroof motor. When I managed to confuse/jam the sunroof the blind also failed.

The manual says the hand-cranking lever is in the glovebox. Mine was clipped inside the rear interior light (where you need to plug it in). If it's missing then an allen key should do it, if there's enough clearance and you can get enough leverage.

Sadly the "sky dome" roofs are troublesome from what I have seen/head and not just on the Croma.

I've not researched eLearn about how they work, what repairs can be done etc. but I gather from my local dealer, who's salesman did a PX on a Croma for a new Fiat without checking that the Croma sky dome worked left them with a real headache and huge cost.

Apparently this Croma need a complete new assembly and to do this the old one has to cut out of the roof. Big bodyshop job.

In the end they just moved the car on to a trade auction.

Unless you can find a quick and cheap fix by downloading and reading the Croma eLearn then you may be better off checking it doesn't leak and then just leave it closed.

Sad thing to do but with no warranty to help you it may be the only viable action.

Doofer said:

I've recently changed mine to a K&N with no problems at all, have driven 2000 miles since (EDIT: Mine's just a filter element in the OEM box, don't know about yours).

Back on topic, I bought mine at 2.5 years old so still had some warranty. I had the sunroof mechanism and motor replaced (which is a huge job - I think they took the windscreen and headlining out to do it), and it's still stiff and sometimes needs a helping hand to close. I've decided not to worry about it - as long as it doesn't leak (and it doesn't) then I'm very happy to have the glass area alone.

The blind motor seems to be very related to the sunroof motor. When I managed to confuse/jam the sunroof the blind also failed.

The manual says the hand-cranking lever is in the glovebox. Mine was clipped inside the rear interior light (where you need to plug it in). If it's missing then an allen key should do it, if there's enough clearance and you can get enough leverage.

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The problem has been diagnosed as the air volume sensor code on the lap top. I also changed the sensor at the same time as the K&N was installed. The old one was not suspect but I had one spare (!!!) so I decided to change it. the Yellow engine light came straight on as soon as I turned the engine on and has not gone off since unless I cancel it with the Laptop, and it comes straight back on when I start up. I also tried it with the old avs and it was still the same. The funny thing about the whole thing is that the car has never run better acceleration is much quicker, i`m going on a long motorway trip to Edinburgh next weekend so I will see how it does in the MPG stakes.
Cheers DINO

I'm not sure what the problem is there, but I doubt it's the K&N. Mine was a new one, and was just pre-oiled as it came - I didn't add any filter oil.

I had one in a previous car and I'm really impressed with them. There are lots of doubters about them, but I think they do make the car much livelier. Of course, I did swap it for an old blocked filter, so this may be at least part of the improvement. I do also like the fact that I can now hear the lovely turbo soundtrack much better now too! Although the general engine noise hasn't increased.

I did remove the plastic diverter piece in the bottom of the airbox at the same time too. This is widely recommended on the vectra c forum, so may be part of the improvement I've seen too. It might be worth a try on yours - just carefully unclip it and see what happens. You can always put it back later if you're very careful not to snap it. Perhaps this may improve airflow to the point that the sensor's happy with it. I did see that the old filter was only dirty on one half, so it clearly does restrict airflow a lot.

I have read talk of K&N filters contaminating airflow sensors with the oil vapour, but I never had a problem on my previous car. Provided you don't over-oil the filter of course.

tarquin1867 said:

The problem has been diagnosed as the air volume sensor code on the lap top. I also changed the sensor at the same time as the K&N was installed. The old one was not suspect but I had one spare (!!!) so I decided to change it. the Yellow engine light came straight on as soon as I turned the engine on and has not gone off since unless I cancel it with the Laptop, and it comes straight back on when I start up. I also tried it with the old avs and it was still the same. The funny thing about the whole thing is that the car has never run better acceleration is much quicker, i`m going on a long motorway trip to Edinburgh next weekend so I will see how it does in the MPG stakes.
Cheers DINO

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Just an update___ removed the part from the a/f box set off to Edinburgh@ ~80mph av returned 51.6 mpg, which was nice!!

I bought a Prestigio a couple of weeks ago - without having read the forum threads first. As it was a reasonably warm day when I got it I opened the roof right back and was very pleased with the whole thing. Then just as I was about to join a motorway I set the roof to close and of course it didn't want to know; doing the "somethings trapped" thing described above where it started to close and then returned to the fully open position.

So there I was in a lay-by with the manual in hand. Having finally found the tool to wind the roof by hand within the light fitting, the roof didn't want to budge at all by hand. After 20 minutes I set my (old) satnav to find the nearest Fiat dealer and as I was driving I was constantly playing with the control wheel. I found that pushing it for a second or two at a time in the far left position inched it forward.

By the time I'd got to where the Fiat dealer used to be(!) the roof was closed and I drove home with mixed emotions about my new car.

That night I googled Croma Sunroof, read this thread and my heart sank.

When I explained to the wife what had happened she said perhaps it was just that it hadn't been used enough.

Refusing to be beaten the next morning I went out with a can of WD40 and spent the next half hour opening and closing the roof several times in each position (starting with position 1 - tilt) and spraying the runners front & rear quite librally.

The result - the roof now opens and closes perfectly. It closes at half the speed it opens with a few clicking noises on it's way; but it does work. I sprayed it again a few days later when it started a go slow upon closing, but since then I've only had a problem once which was when rainwater got on the runners when I opened it after it had been raining. It went into the "somethings trapped" mode again and I just grabbed the leading edge of the roof and pulled it to aid in closing.

Next day when it had dried out it was fine again.

Now when I'm sat in traffic I sit and play with the roof just to exercise it - and draw stares of bewilderment from other motorists. Main thing is though, it works and I'm gonna keep using it every chance I get.

For me the main problem with them is, as the wife suggested, people are scared to use them so they stiffen up to the extent that the motor has a hard time pushing it closed.

After all, if you spent a month not walking you'd have a hard time with the muscles in your legs - same thing. Use it or lose the use of it.