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Old 03-10-2016   #76
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Re: HEATER Matrix unit removal

I don't want to start a new thread on this, but hope I receive a reply. My heater no longer activates when the dial/knob is turned. Is this dial connected physically to the heater box - or is it electrically activated? It always turned so easily I am thinking the latter.
If so, where would I start, to effect a repair?
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Old 04-10-2016   #77
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Re: HEATER Matrix unit removal

the heat is turned on by repositioning a flap that redirects the air flow mayking it pass by the heater , this flap is physically conected to the knob by a wire cable it's a pure mecanic process not electrical.
it's possible that the cable just snapded or the plastic fit of the knob had broken !!? you should comfirm it by dismantling the knob and see if the cable it's still atached !!
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Old 05-10-2016   #78
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Smile Re: HEATER Matrix unit removal

Thank you JMSG ! - OK this means I have to remove the panel to get to the switch to see what has happened. I was thinking if there was a solenoid somewhere I wouldn't want to waste time doing unnecessary things! I will now remove the panel, thank you for your help!
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Old 20-03-2017   #79
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Re: HEATER Matrix unit removal

Going down the same road - and I need some help. My car has air-con & passenger airbag.

Have already taken out the seats, center console, instrument pod and steering wheel.

1) Does the dashboard come out in one piece or two separate pieces?

Have taken out some screws here and there, including the ones inside the corner air inlets and the left side of dash feels loose already. The area on the right side of center console (=at the passenger airbag) appears to need further attention.

Don't really know how to proceed with the passenger airbag. Taking of the surface panel off was trivial. Read in this thread that some rivets must be drilled. There is a row of four rivets higher up which are painted yellow (=color coded for airbag, I guess) and lower down there are three slightly larger rivets which attach the bottom of the steel panel to the backing structure. Which one do I need to drill? I presume the dashboard is screwed to the car behind the airbag which needs to be removed.

I am sort of terrified about braking things so would appreaciate some help before I proceed.

Cheers, Kare

Edit: re-reading the posting by richit I figured out that the four rivets need to be drilled to remove the airbag. Will do that next. At this point it still looks like a never-ending nightmare, but on we go!
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Last edited by Kare; 20-03-2017 at 13:01.
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Old 20-03-2017   #80
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Re: HEATER Matrix unit removal

i there !
the dashboard comes out in one piece , you can see pictures of it out in barchettaparts online store .
i advise you to download the tecnical manual that is on the forum it has a chapter dedicated how to dismantle the dashboard and other related issues , it helped me !
the radiator is the same as fiat punto it cost me around 20 euros in after market part shop .
be pacient , and good luck with it
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Old 21-03-2017   #81
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Re: HEATER Matrix unit removal

My question was really a misunderstanding, I thought the structure in front of the dash must also come out - but now I see it is part of the steel body.

I wonder if the steering wheel really needs to come out. If you unscrew the steering column (four nuts) and rest it on the floor, the dash would also clear out. I think the steering column must be dropped anyway as the stalk unit is in the way.

Next thing I'm going to do is to pick up a pair of old sofa cushions from the trash at the recycling center. More comfortable to sit on the floor when you don't need to worry about the airbag wires for the seats.

The airbag came out after drilling the four small rivets and pulling the lower edge of the cover out out (scary!). The wire was pretty long and loose, so no risk of breaking it really. The three rivets on lower edge also need to be drilled to get the harness/circuitry off. It looks like there are small provisions for steel clips, so it might be possible to replace these 3 rivets with clips & screws.

I also drilled the rivets in far left corner of dash as some were already falling apart, so the plastic structure holding the fuse box was left into the car. Just need to figure out what kind of screws I need to fix it properly when putting it back together.

Now that the dash is out, I still cannot see how to get the heater out, but never mind, the fight goes on. And yes, paid less than 30 euros for new core, including shipping.
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Old 21-03-2017   #82
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Re: HEATER Matrix unit removal

Right now: pretty amazed that aircon tubes wiggled out of the car. The thin one needs replacing, rotten at the hold down located under battery. Check yours!
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Old 21-03-2017   #83
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Re: HEATER Matrix unit removal

Breathing a sigh of relief that mine doesn't have air con. I never want to do this job!
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Old 24-03-2017   #84
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Re: HEATER Matrix unit removal

This thread is a treasure! Many valuable hints along the way.

The heater assembly really sticks to the sound proofing material! It seems the coolant softens the material and in the end my heater assembly came out with a torn piece of mat permanently attached to the core! It didn't take enormous force, but determined pulling was really needed.

Luckily I noticed that the heater wiring and the airbag box cable (yellow) were bundled together with a cable tie. By all means it should be possible to cut that tie as soon as the center console is out. The cable tie was located very close the connector under the heater. With that tie cut, it should be safe to pull the assembly.
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Last edited by Kare; 24-03-2017 at 10:04.
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Old 18-04-2017   #85
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Re: HEATER Matrix unit removal

When pulling the passenger airbag cover out, the attachment clips will break. They are designed to snap so that no sharp pieces will fly out when the bag explodes.

Replacement is fiat part no. 46460519. BMW/Mini part 51458146760 is about exactly the same, fits perfectly and might be easier to obtain. I paid 75 cents per piece at the local BMW dealership. The BMW part needs to be trimmed shorter, but that's it. You will need two of them.
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Last edited by Kare; 18-04-2017 at 11:41.
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Old 19-04-2017   #86
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Re: HEATER Matrix unit removal

Hi Richit. Usually there are only two causes for grinding gears. Well maybe three if the driver is new to standard shift. Clutch adjustment, either a worn disc and not engaging properly (needs replacing)or slightly worn and in need of a proper adjustment. The other common problem is worn synchro gears which are usually brass or some other soft metal.I believe the Fiat box to be quite robust so I would first check the adjustment on the throwout bearing.To much slack on the pedal can and will cause grinding. hope this helps.
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Old 17-10-2018   #87
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Quote Originally Posted by richit View Post
Hi, has anyone suffered a coolant leak inside the car from the bottom of the heater unit? I've had my 2002 Barch for 18 months and it's always leaked a little when the heater control was on anything but cold. Yesterday the little leak turned into a torrent. There was more than a litre of coolant in the driver's footwell. This morning I attempted to remove the unit to see what's going on, but it's a nightmare. I can't see how to take it out. I have the centre consul out. It still looks very happy to stay where it is.

I've decided to bypass the matrix for now by re-routing the water pipes under the bonnet, as it's very hot here at the moment so I don't need heaters for a while, but I do want to use the car.

Any suggestions? THANKS!
I would also like to know how to bypass my heater pipes
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Last edited by Ockertvdberg; 17-10-2018 at 15:28.
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Old 17-10-2018   #88
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Re: HEATER Matrix unit removal

in the engine bay search for 2 ruber hoses that come from engine and go in the bulkhead , unclamp them and remove from bulkhead , find a short pipe from same diameter and conect them into each other clamp it and check coolant liquid before and after runing temperature , check for leaks . its done !
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