5th Gen 3sge, Battery light and overheat light on Options

[PolliS_5S-FE]

Hi guys, just recently did the headgasket on my mates 5th gen with a 3sge, ran fine, idling a little low but is running good until yesterday while driving the battery light comes on along with what im guessing is the overheating light looks like:
sss
=[]=

The 's'es are supposed to be squiggly lines.

No engine codes, serpentine belt isnt broken, as far as i can see all the pulleys are turning...

Any ideas??

Also the light that looks like the car with lights on is on.

[Bitter]

alternator working?

[Rusty]

thats the catalytic converter temp sensor.

if it comes on when you first start the car, it could be a faulty sensor. But if the warning light comes on when driving the cat could be blocked.

heres a pic I found on google. bonus its even a celica.



* the oil light should be oil pressure, not oil level.

[PolliS_5S-FE]

Thankyou rusty, I knew you would comment! you = 3sge.

So it seems strange to me that the rear lights go at the same time as the cat (possibly) sensor. Could this be a short somewhere?

[delusionz]

its your alternator dieing, the other lights come up because they rely on seeing 12v+ which obviously your alternator isnt putting out. replace that alternator before you get stranded somewhere.

(from identical experience)

[PolliS_5S-FE]

Thankyou.