S40: - 1999 s40 Hazard lights problem

s4022000 · Feb 16th, 2012, 21:27

Hi there, New user here 2nd time volvo owner. Just bought an S40 1999 1.8 xs. walked out of house and hazard lights were on and stuck on.

Tried locking re locking manually. pressing c/lock all that and no joy, unless I kept the hazard button fully pressed or Indicators were on. Thought the switch button was gone so i pushed it hard and it stuck at the fully pressed in point. So I have either shorted or disconnected the switch, Not sure but it solved it, although got no hazards now as button is stuck in and i'm scared to pull it out in case hazards get suck on again.

Any way my point is after being on this forum I now think it may be the loom or perhaps there was a reason the hazard were flashing in the first instance. The drivers side door lock is stuck in unlock position so maybe related. So I am fearing loom probs now and dreading it. I'm an electrician but know nothing of auto electrics. Is it a ring configuration with multiple spurs or what. how are conductors insulated etc. Cheers and Hi

Unreal master tech · Feb 16th, 2012, 21:47

Could be the relay which is under the drivers footwell above the small fuse box try giving it a wiggle it might be enough to get it to work if not pull it out and have a look it's a bit tight to remove from memory but it's a good starting point?!

scottishvolvo · Feb 16th, 2012, 22:12

Check the alarm switch at the bonnet lock. It's a microswitch, use copious amounts of WD40 or similar and make sure the metal contact operates the small button. You'll see what I mean when you find it.

gatos · Feb 16th, 2012, 22:14

This is one of the very week points of the S/V40. The hazard light switch is made of butter and does fail. A replacement switch will most probably solve your problem

See here: http://www.volvoforums.org.uk/showth...d+light+switch

and for a guide of how to change the hazard light switch, see my guide here: http://www.volvoforums.org.uk/showth...d+light+switch

s4022000 · Feb 17th, 2012, 16:01

Thanks for feedback. Feel more reassured now.Nice to hear the switch is a known problem. Its only done 22k so hopefully loom still intact!!

Feb 16th, 2012, 21:27	#1
s4022000 New Member Last Online: Mar 20th, 2012 23:47 Join Date: Feb 2012 Location: east grinstead	1999 s40 Hazard lights problem Hi there, New user here 2nd time volvo owner. Just bought an S40 1999 1.8 xs. walked out of house and hazard lights were on and stuck on. Tried locking re locking manually. pressing c/lock all that and no joy, unless I kept the hazard button fully pressed or Indicators were on. Thought the switch button was gone so i pushed it hard and it stuck at the fully pressed in point. So I have either shorted or disconnected the switch, Not sure but it solved it, although got no hazards now as button is stuck in and i'm scared to pull it out in case hazards get suck on again. Any way my point is after being on this forum I now think it may be the loom or perhaps there was a reason the hazard were flashing in the first instance. The drivers side door lock is stuck in unlock position so maybe related. So I am fearing loom probs now and dreading it. I'm an electrician but know nothing of auto electrics. Is it a ring configuration with multiple spurs or what. how are conductors insulated etc. Cheers and Hi Last edited by s4022000; Feb 16th, 2012 at 21:34. Reason: spelling

Feb 16th, 2012, 22:12	#3
scottishvolvo Premier Member Last Online: Nov 17th, 2023 00:15 Join Date: Dec 2004 Location: Glasgow	Check the alarm switch at the bonnet lock. It's a microswitch, use copious amounts of WD40 or similar and make sure the metal contact operates the small button. You'll see what I mean when you find it. __________________ Chris '98 S40 2.0T..Gone. 2000 S40 2.0 SE Auto and loving it. 2014 V40 Cross Country Please consider registering with the Anthony Nolan Trust, you could save a life.

Feb 16th, 2012, 22:14	#4
gatos Premier Member Last Online: Nov 15th, 2022 21:34 Join Date: Apr 2010 Location: London / Essex	This is one of the very week points of the S/V40. The hazard light switch is made of butter and does fail. A replacement switch will most probably solve your problem See here: http://www.volvoforums.org.uk/showth...d+light+switch and for a guide of how to change the hazard light switch, see my guide here: http://www.volvoforums.org.uk/showth...d+light+switch __________________ Current car: 2002 S40 1.9D, 1992 240SE Nullius in Verba

Feb 16th, 2012, 21:47	#2
Unreal master tech Senior Member Last Online: Jun 26th, 2016 19:23 Join Date: Jan 2012 Location: Livingston	Could be the relay which is under the drivers footwell above the small fuse box try giving it a wiggle it might be enough to get it to work if not pull it out and have a look it's a bit tight to remove from memory but it's a good starting point?!

Feb 17th, 2012, 16:01	#5
s4022000 New Member Last Online: Mar 20th, 2012 23:47 Join Date: Feb 2012 Location: east grinstead	Thanks for feedback. Feel more reassured now.Nice to hear the switch is a known problem. Its only done 22k so hopefully loom still intact!!

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