The switch may not work or like in your case it may short and drain the battery you can find the procedure to remove the switch summarily described on this forum.
Hazard warning lights come on by themselves.
2003 4runner 6 cly 2wd sr5.
The hazard and turn signal lights found on the vast majority of road going vehicles are controlled by a flasher which is commonly referred to as a relay.
If the electrical relays malfunction internally they can cause the hazard lights to act up.
The hazard lights on my car are randomly coming on.
If your hazard lights are malfunctioning especially after a jump start then it may be possible that there is an issue with one of the electrical components.
Push hazard switch in and out no effect.
Hazard lights come on by.
I ll just try the hazard switch.
The switch can be tested disconnecting it from wires and using an ohmmeter on its contact to ensure it is opening and closing fine.
Series 3 hazard light switch malfunctions are quite common.
The flashers are controlled by electrical relays that switch power to them on and off.
So i pulled the fuse again.
Replace the hazard lights switch.
Thought the indicators were working fine though.
Stop when vehicle is started running.
Went on off the first time.
They may blink a bit faster than turn lights because on some flasher units the rate of on off depends upon the load number of bulbs they feed.
Started doing this suddenly.
Then started by itself again then went fast slow.
They came on once whilst i was out there about 30 seconds or so after i d locked it double locked with the imobiliser.
This is the first.
Hazard lights come on by themselves when engine is off.