Hazards stuck on!

jack23m · May 24, 2023

Hi guys, new here. Have been battling with my discovery 2, for 2 years now. She's finally getting somewhere. But recently it has started activating the hazards at random intervals. It can be fine for a day, then the day after the hazards will constantly trip! Most times I can't get them to stop unless I pull the fuse.
It happens at random times, smooth roads, traffic Jams, on the motorway,
Just to confirm, the engine carries on running. The central locking doesn't work until I open and close a door. No warning lights etc just some bright hazard lights!
I have "checked" both fuse box's but to the un trained eye they look okay. No rust or moisture etc. Please please someone give me some ideas!

Thank you!!

tottot · May 24, 2023

The Hazard switch itself can be a source of problems.

jack23m · May 25, 2023

tottot said:
The Hazard switch itself can be a source of problems.

Thanks Tottot,
I have removed and cleaned the switch contacts but couldn't see anything a miss. I might try a 2nd switch from the breakers just to be sure.

sierrafery · May 25, 2023

Let the switch unplugged for test and if the hazards will come on that way then it's something else, if the hazards will rest with switch unplugged then fit a new one.... if it's not the switch it can be a problem within the interior fusebox which is not visible, the only way to rule it out 100% is to replace it with known good one

jack23m · May 25, 2023

Thank you sierrafery, that might be worth a shot. So far I've tried,
- alarm reset (various methods)
- New roof reciever because the signal was crap
- cleaned both fuseboxes
- bridged inertia switch (still runs but doesn't de activate hazards)
I will try the hazards unplugged, then after that it looks like it will be trial and error with wiring and fuse boards.
Thanks for the replies so far!

jack23m · May 25, 2023

I have just tried this. Hazards came back on nearly straight away with the switch unplugged. After fiddling with the fuse box under the steering wheel I seem to have triggered something as it does it every time the key is inserted into the ignition now so I may have found myself a starting area. Thanks again

sierrafery · May 25, 2023

Find a used but confirmed good fusebox removed from same modell(facelift or not, they are not very expensive) and replace your's cos it's feckless to investigate other things untill that one is not ruled out. You have to disconnect the battery negative lead first then after the swap and reconnection turn ignition on 2 and let it so 5 minutes before you do anything else, maybe you are lucky to be that cos chasing a wiring issue can be a nightmare also the second suspect in this case is the BCU which is more expensive and needs complex programmimng

jack23m · May 27, 2023

I think the bcu is next on the list. Removed both fuse boxes and found corrosion on both, replaced with a good (matched) 2nd hand set and as soon as I put the key in the hazards came on!! The saga continues

Hazards stuck on!

jack23m

New Member

tottot

Well-Known Member

jack23m

New Member

sierrafery

Well-Known Member

jack23m

New Member

jack23m

New Member

sierrafery

Well-Known Member

jack23m

New Member

Similar threads