com2000 unit problem horn airbag

[kt021979]

       
hi i have a problem with a my com2000 unit , the com2000 part number is 96605680XT .
i have an intermitent horn have read the forum for a while as a guest but doing my head in now so thought might aswell join .
any way long story short asked a friend to sort horn out he said he would. he had took airbag of to give the connections a clean , any how horn stoppped working so i tried fixing myself from under the steering cowl to bottom off steering with bit of wire and jubille clip ,

then today i was going drill the steering wheel and self tap the wire , any how , the wire from the com unit too the airbag as sime how ended up like a slinky !!
my questions is do i need the exact same kind of com2000 unit as mentioned all will others works if so which 1's please ,thankyou

[Kyleonsite]

I had this problem recently with mine, horn only worked when the engine wasn't running.
The issue is the horn earth's through the steering column bearings which dry/increase resistance as they get older. I wrapped a 400mm long 'earth braid's (as used in industrial electrical cabinets) round the shaft and attached it to one of the brake pedal mounting screws where they fasten to the bulkhead. A single strand copper cable stripped of its sleaving also works.
You are basically wanting to earth the shaft but whilst still allowing it to turn unimpeded.


Horn works fine now.

[pondweed]

Could I ask whether, for those who have been fiddling with COM2000 units, whether people think replacing my unit MIGHT correct my continuing seatbelt warning/siren conflict? The problem goes away when I put the wipers on... and returns when the wipers are turned off.

[Gryffindor]

Kyleonsite, I've done a fair bit of online research on com2000s but I think the main problem is that people rarely seem to need to swap them over, so it isn't really known whether you need the exact same replacement or not.

What I will say is that there seem to be hundreds of different com2000 part numbers, far far more than there are trim versions, part manufacturers and years of production. That suggests that you might not need the same part number, at least in some cases. But I can't promise anything!

It is notable however that their casing comes in a much smaller range (half a dozen IIRC?) of different shapes. If you can't find the same part number com2000, I can only suggest you look for one which has the same shape casing as yours and exactly the same stalks (pay close attn to the stalk buttons - zoom right in on photos), and cross your fingers.

Pondweed, I had to search through your various disjointed threads to find out what you are talking about! It would help if you linked to them or explained things better, for those of us who haven't seen them.

If in this post https://www.berlingoforum.com/thread-213...#pid137750 "silicone grease" means WD40, then it could indeed be the cause of your problem. WD40 is electrically conductive - you'll find lots of warnings not to spray it on electrical bits in the engine bay. So at a guess, assuming the seat belt problem began when you did this spraying, you might have shorted out some of the pins/sockets in the com2000s multiway connector, or some other connector in there.

Next time, use switch cleaner or contact cleaner.

BTW, I don't think I get any "siren" sound if the seatbelt isn't plugged in? I will have to try tomorrow to be sure. Could be down to different trims/specs?

[saskak]

Could I ask whether, for those who have been fiddling with COM2000 units, whether people think replacing my unit MIGHT correct my continuing seatbelt warning/siren conflict? The problem goes away when I put the wipers on... and returns when the wipers are turned off.

Difficult to say if replacing the unit will fix your problem. Rasputin has put it well in his reply.

I replaced my com2000 unit and my intermittent headlights turning on randomly was fixed, but I still get some weird behaviour. When I remove the battery, sometimes the rear wiper arm turns on on its own and one of turn signals might not work. Once I put  the opposite signal and turn on/off the wiper arm everything works as it should. The unusual behaviour only happens if the battery is disconnected.
I bought the same unit quite cheap on ebay, so have no problem with the weirdness only when removing the car battery.

[brajomobil]

com2000 is not coded to BSI so you can replace it.
Here is some old thread on fixing : https://www.berlingoforum.com/thread-14330.html

Best regards,
brajomobil

[riley82]

I recently had problems with my comm unit...headlights on automatically faulty indicators etc etc. I had to get the correct serial numbers to match and replaced the unit £60 from ebay. Once airbag and steering wheel was off was quite easy to do. I'd just replace the unit...but with correct number. I tried different serial numbered units and it didnt work. It's all working fine now...just my 2p worth hope this helps

[Gryffindor]

Could the com2000 be specified in Diagbox even if not coded to the BSI? If yes, then maybe its possible to change the com2000 part number or designation or type (?) in Diagbox?

[saskak]

Could the com2000 be specified in Diagbox even if not coded to the BSI? If yes, then maybe its possible to change the com2000 part number or designation or type (?) in Diagbox?

I do not think the com2000 can be specified in Diagbox. I tried all possible options to see if it needs coding, but there was nothing. AFAIK, it is plug-n-play.