In a Vauxhall Astra, the hazard lights relay is typically located in the fuse box. For most models, the fuse box can be found either under the dashboard on the driver's side or in the engine compartment. You can consult the owner's manual for the exact location and identification of the relay. If you're having trouble, it may be useful to check online forums specific to your Astra model for more detailed guidance.
If you will notice the hazard lights are not actually flashing, reason being, the hazard flasher relay is defective. Replace it.
A flasher relay interrupts power to the hazard lights making them flash. The relay can be a dedicated relay or it can be the same relay that operates the turn signals. Depends on the make, model, and year of the vehicle.
In a 2005 Astra, the hazard lights are typically powered by fuse number 15 in the fuse box. However, it's always best to consult the owner's manual for the specific fuse diagram, as configurations can vary by model and region. If the hazard lights are not functioning, checking this fuse is a good first step.
if you mean: "why do hazard lights flash when brakes are on", then the answer is because vehicles are equipped with a hazard light relay that supercedes the brake lights. This way, slow moving vehicles can operate under hazard lighting.
The turn signal and the hazard lights each have their own relay. Sounds like you have to replace both relays.
Defective Flasher Relay, replace it. One relay operates the Hazard Lights and the other operates the turn signals. Be sure and replace the correct one.Defective Flasher Relay, replace it. One relay operates the Hazard Lights and the other operates the turn signals. Be sure and replace the correct one.
Bad switch/relay?
Relay contacts welded together
Check the fuses and it may be the flasher relay as they have 2 try turning the hazard lights on and off a few time as you relay may be stuck.
Flasher relay bad. This is a separate flasher relay from the one controlling the hazard lights.
it could be a bad relay
Faulty hazard lights on a 1994 Acura Integra can be fixed by replacing the hazard light relay or the defective bulbs. Hazards are used to notify other drivers that the vehicle is in distress.