Total electrical failure ! Help??

[Guest grifter]

Have a 1996 facelift import Mk.IV Supra RZ TT Auto; driving along tonight, entire dashboard flickered off for 1 second and came alive again. Drove on for 60 secs, pulled into home driveway and entire car's sytems turned off like a light switch whilst ignition live! Pitch black inside car, dead engine,dead Clifford immob., no pre ignition or main ignition, dashboard dead, in fact car well & truly dead! Half a tank of petrol on board and a healthy battery. Only precursor to this is the central locking button playing up 48hrs prior.No other previous.

Does anyone have any idea or experience of this?? Open to any advice please gentlemen, would be much obliged.

Cheers all.

[JODY T]

have you checked that both terminals are still on the battery? check the main car fuze... under the red bit in the underbonnet fuze box

[Konrad]

First thing to check is main 120A fuse. After that I would check earth (negative connection to body and engine block).

[TTRickeh]

How do you know the battery is healthy?

[ManwithSupra]

I had this once, found out the garage who did the service on mine didnt tighten the "+" battery terminal and the car was doing strange things like you said, once it was tight it was good

[TTRickeh]

I had this once, found out the garage who did the service on mine didnt tighten the "+" battery terminal and the car was doing strange things like you said, once it was tight it was good

 

That's what I was getting at, make sure your terminals are connected properly Other than that, i'm not sure

[Homer]

Moved and merged.

 

Please do not post duplicate threads with the same content.

[jim]

It's possible that it's a loose connection to your battery as said, you'll also need to make sure that the battery is properly secured and clamped in place as it could be movement of the car (turning into your driveway for example) that's causing the battery to move and cut the connection.

[heckler]

I had someting similar when the negative terminal had come off the battery... re-attached it and was fine

[j80leo]

Alternator might have gone?

[TopgunTT]

When i lost all power to everything it was my alternator that was fucked, Had to get a brand spankers.

[jay5041]

sounds like what happened to me over christmas. turned out the alternator was fubared!

[dude]

Check the +ve lead to the alternator (12mm nut)

[Alex]

After you've checked on the above, the next thing on my list would be a bad earth somewhere else. There are a lot of earth points but I'd start with the engine bay ones.

 

Have fun with the multimeter...

[Guest grifter]

Thanks for those posts folks.

 

Turned out battery had been moving around it's tray and -ve terminal worked it's way off the battery!!

Battery now secured in tray and a quality braided earth cable fitted with plenty of slack should a repeat occur. Worth checking battery regularly me thinks !!

[OOPS][/OOPS]