V40 Hazard lights

MickeyK · Mar 14th, 2008, 08:20

Hi there,

Hazard warning lights on my v40 refuse to work, indicators still do. Garage have changed the hazard switch, relay and checked the fuses - still no luck. The seat belt warning sound/light seems somehow connected - if I press the Hazard switch it stops the seatbelt warning sound and flashing light?? Are these connected? Can anyone suggest anything? Garage is unsure of what to try next!!!

Liberty555 · Mar 14th, 2008, 08:59

Hi

The little tick tick noise you get with the indicators uses the same sounder as the seat belt warning, thats why it stops when you hit the hazards. The seat belt sounder works at twice the frequency as the normal indicator - the same frequency as when you've blown an indicator globe...

Hope this clarifies it - I think its just the same relay, thats all.

Enigma666 · Mar 14th, 2008, 09:32

Also if you're activating the hazards and its effecting the ticker then that means the circuit is working....
I'm assuming the bulbs have been checked?
If yes then it sound slike a bad connection somewhere

YouNeek · Mar 14th, 2008, 11:25

Quote:

Originally Posted by Enigma666

I'm assuming the bulbs have been checked?

Well, he said the indicators are still working, which means the bulbs are working.

Enigma666 · Mar 14th, 2008, 11:40

Not 100% sure how the wiring diagram looks for this but would guess then that the hazards are wired into the indicator wiring maybe?
Perhaps one of the connections to the switch is faulty?

avx · Mar 14th, 2008, 21:59

I found this diagram for you. I hope will be useful! Best!

alek · Mar 15th, 2008, 18:24

Hi,

I have a 1.6 S40 1999 Reg. Had a similar problem last year. In addition to hazards not working, heater blower fan inside the car stopped, side lights also stopped working but main, dipped lights and left/right indicators were fine. I traced the problem to a wiring loom that runs from the relay / fuse box in the engine bay to the fuse box inside the car. Some genius at Volvo thought it would be a good idea to run the loom under the radiator! Over time as the rad vibrates and comes in contact with the loom it cuts through the insulation and lets water into the loom. The copper corrodes and breaks. All this is very well hidden under the rad and initially its all intermittent until the loom brakes completely. Watch out for any other electrics failing soon.

To check if this is the problem use a multimeter and connect one lead via a loooong lead to Fuse 2 in the engine fuse box, the other lead to fuse 8 in the internal fuse box then check the continuity and resistance of the loom. FYI, the loom is Red and about 4mm diameter, it can be seen with a small mirror if you lie under the radiator and look up at the tray that protects it. Volvo know about this but have not issued a recall. It cost me 136 gbp at the main dealer who said he knows the problem well and fixed at least 4 of these in the last year. I wrote a nasty letter to Volvo UK to complain and they sent me a voucher for 100 pounds! The repair would have been minimum 200 pounds if I had not told them where the problem was and they had to trouble shoot.

Good luck,

Alek

MiranicePaul · Sep 7th, 2008, 14:00

Hi there, I had an alarming problem last winter; my headlights stopped working whilst I was driving along a country road at 5am and the problem was found to be exactly the same as yours, viz the loom under the radiator. My hazards are not working and my indicators only work unless the hazard light switch is depressed, a bit like me! :-( ,and I think I may have the same problem again with the loom. I think I may write to Volvo UK as well. Thanks a lot for all the advice.

Mar 14th, 2008, 08:20	#1
MickeyK New Member Last Online: Feb 17th, 2012 12:33 Join Date: Mar 2008 Location: Donegal	V40 Hazard lights Hi there, Hazard warning lights on my v40 refuse to work, indicators still do. Garage have changed the hazard switch, relay and checked the fuses - still no luck. The seat belt warning sound/light seems somehow connected - if I press the Hazard switch it stops the seatbelt warning sound and flashing light?? Are these connected? Can anyone suggest anything? Garage is unsure of what to try next!!!

Mar 14th, 2008, 08:59	#2
Liberty555 Member Last Online: Aug 20th, 2009 08:27 Join Date: Jun 2007 Location: Limerick	Hi The little tick tick noise you get with the indicators uses the same sounder as the seat belt warning, thats why it stops when you hit the hazards. The seat belt sounder works at twice the frequency as the normal indicator - the same frequency as when you've blown an indicator globe... Hope this clarifies it - I think its just the same relay, thats all. __________________ I know that you believe you understand what you think I said, but I'm not sure you realise that what you heard is not what I meant.

Mar 15th, 2008, 18:24	#7
alek New Member Last Online: Feb 26th, 2015 21:42 Join Date: Mar 2008 Location: Nottingham	try this... Hi, I have a 1.6 S40 1999 Reg. Had a similar problem last year. In addition to hazards not working, heater blower fan inside the car stopped, side lights also stopped working but main, dipped lights and left/right indicators were fine. I traced the problem to a wiring loom that runs from the relay / fuse box in the engine bay to the fuse box inside the car. Some genius at Volvo thought it would be a good idea to run the loom under the radiator! Over time as the rad vibrates and comes in contact with the loom it cuts through the insulation and lets water into the loom. The copper corrodes and breaks. All this is very well hidden under the rad and initially its all intermittent until the loom brakes completely. Watch out for any other electrics failing soon. To check if this is the problem use a multimeter and connect one lead via a loooong lead to Fuse 2 in the engine fuse box, the other lead to fuse 8 in the internal fuse box then check the continuity and resistance of the loom. FYI, the loom is Red and about 4mm diameter, it can be seen with a small mirror if you lie under the radiator and look up at the tray that protects it. Volvo know about this but have not issued a recall. It cost me 136 gbp at the main dealer who said he knows the problem well and fixed at least 4 of these in the last year. I wrote a nasty letter to Volvo UK to complain and they sent me a voucher for 100 pounds! The repair would have been minimum 200 pounds if I had not told them where the problem was and they had to trouble shoot. Good luck, Alek

Sep 7th, 2008, 14:00	#8
MiranicePaul New Member Last Online: Sep 7th, 2008 19:17 Join Date: Sep 2008 Location: Taunton	Hazards not working Hi there, I had an alarming problem last winter; my headlights stopped working whilst I was driving along a country road at 5am and the problem was found to be exactly the same as yours, viz the loom under the radiator. My hazards are not working and my indicators only work unless the hazard light switch is depressed, a bit like me! :-( ,and I think I may have the same problem again with the loom. I think I may write to Volvo UK as well. Thanks a lot for all the advice.

Mar 14th, 2008, 09:32	#3
Enigma666 Master Member Last Online: Apr 16th, 2021 11:32 Join Date: Aug 2006 Location: Chester	Also if you're activating the hazards and its effecting the ticker then that means the circuit is working.... I'm assuming the bulbs have been checked? If yes then it sound slike a bad connection somewhere

Mar 14th, 2008, 11:40	#5
Enigma666 Master Member Last Online: Apr 16th, 2021 11:32 Join Date: Aug 2006 Location: Chester	Not 100% sure how the wiring diagram looks for this but would guess then that the hazards are wired into the indicator wiring maybe? Perhaps one of the connections to the switch is faulty?

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