Electrical: Hazard Warning Issue

[MrBloxz]

Hi all

I'll start this by saying I know pretty much nothing about car electronics, My car is due its MOT so I was going through everything to make sure it would pass, I turned on my hazard warning switch and it started making a buzzing noise and doesn't activate the indicator lights, I also noticed the seatbelt warning light went off while the hazard switch was active, I think its shorting somewhere, Any ideas where the problem is likely to be or the best place to start looking?

https://imgur.com/a/n65b0vU
The link should go to a short video showing what happens when I press the hazard switch, make sure to switch audio on

Thanks
Kallum

[Bob Meadows]

Hi:~
The seat belt warning light & clicking should revert to a slower action when the hazards/indicator switch is also on.

You will find a solenoid for the above under-behind the clove box- remove the trim panel and you should find it (memory loss if the glove box needs removing? quite straight forward though)

I would check the switch first i.e. rear wiring and the internals- they can be opened carefully but watch out for small parts flying (opening in a clear plastic bag may help) if everything seems ok- do a test with a 12v bulb then it is likely to be a fault in the solenoid- you should be able to pick one up from a factors as they are nothing that special.
Trust it helps
Bob.

(The manual will show the location or google for pictures etc.)

[Stephen Edwin]

Are the indicators all working OK?

Is there a bulb failed?

Is there a faulty earth connection?

I tend to guess that an auto electrician could sort this quickly and therefore at low cost.

I am doing less auto DIY ... life has always been short ...


Good luck.



.

[MrBloxz]

Originally Posted by Stephen Edwin

Are the indicators all working OK?

Is there a bulb failed?

Is there a faulty earth connection?

I tend to guess that an auto electrician could sort this quickly and therefore at low cost.

I am doing less auto DIY ... life has always been short ...


Good luck.



.

The indicators work fine, I'm beginning to think it might be easier to just find an auto electrician

[Stephen Edwin]

Originally Posted by MrBloxz

The indicators work fine, I'm beginning to think it might be easier to just find an auto electrician

Please don't pay too much attention to my post. I'm getting far less inclined to actually doing jobs on my car. There are more enthusiastic members. Bob has already started giving some advice.

Good luck.





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.

[Othen]

Originally Posted by MrBloxz

Hi all

I'll start this by saying I know pretty much nothing about car electronics, My car is due its MOT so I was going through everything to make sure it would pass, I turned on my hazard warning switch and it started making a buzzing noise and doesn't activate the indicator lights, I also noticed the seatbelt warning light went off while the hazard switch was active, I think its shorting somewhere, Any ideas where the problem is likely to be or the best place to start looking?

https://imgur.com/a/n65b0vU
The link should go to a short video showing what happens when I press the hazard switch, make sure to switch audio on

Thanks

Kallum

Here is a link to the wiring diagrams (1981MY, for these two ccts they won't have changed much over the years):


https://1drv.ms/b/s!Ask6E_1jz4xIgYVR...RwVjA?e=mj3VpI

... I'll leave the link up for a couple of days, so download a copy for yourself.

pp92 and pp96; it all looks pretty straightforward and shouldn't take long with a multimeter to find the fault. It sort of has to be either a switch or a relay (unless someone has cut into the wiring somewhere). Bob's advice is good - start unplugging things (switches and relays) one at a time (and reconnect afterwards) to see if the problem goes away. Above all: be methodical (and make notes of what you do).

Good fortune.

Alan

PS. Bob and I have just arrived back from his first walk, so I've had a look at the two cct diagrams. First check fuse 9 (unique to the hazard warning) - take it out and they shouldn't work - if they still work the switch is being powered up somehow by the wire from fuse 13 (common to the seat belt warning). If that is okay check the continuity/discontinuity of the wires from fuse 13 (probably blue/red) - that may be common and so is a suspect). If that is okay then check the hazard switch (as Bob said...) und so weiter... through the system.

[AndrewBrown]

Replace the relay that buzzes for the seatbelt warning as a first step

99% of the time its that

[MrBloxz]

Originally Posted by AndrewBrown

Replace the relay that buzzes for the seatbelt warning as a first step

99% of the time its that

Hi Andrew, I've looked behind the glove box and under the steering column and cant see the relay, do you know where it is supposed to be

https://www.autogenius.info/wp-conte...relay-1974.jpg

Thats the diagram i'm following (no15), it should be a blue 8 pin relay should't it?

[AndrewBrown]

Originally Posted by MrBloxz

Hi Andrew, I've looked behind the glove box and under the steering column and cant see the relay, do you know where it is supposed to be

https://www.autogenius.info/wp-conte...relay-1974.jpg

Thats the diagram i'm following (no15), it should be a blue 8 pin relay should't it?

should be under there somewhere thing is people will fix or replace things then
just stuff it all back in

thing to do is get it clicking or buzzing then go looking for it while its making a noise should be easy to find check out the flasher relay too

[MrBloxz]

Originally Posted by AndrewBrown

should be under there somewhere thing is people will fix or replace things then
just stuff it all back in

thing to do is get it clicking or buzzing then go looking for it while its making a noise should be easy to find check out the flasher relay too

Update, so the clicking sound for the seatbelt warning and the buzzing sound from the hazards sounded like it was coming from behind the centre console, I took out the plastic covers on both sides and both sounds sound like they are coming from this silver unit, any idea what it is?

122157948_10217788360408145_5648936279357948717_n.jpg

122175057_10217788360768154_6040985348581495108_n.jpg