The first step would be to determine WHY it's blinking. Kind of difficult to repair something when you haven't even diagnosed what the problem is. I'd recommend you take it to a dealer to have the computer hooked up so that fault codes on the ECM can be checked.
If an AC light is blinking on a 1991 Toyota Camry it may indicate that a belt is slipping. The AC light may also blink indicating that the system has been overcharged.
Need to know which light is blinking.
what cause the ac light to blink on a 1999 Toyota sienna
It's telling you the revolution sensor is not matching the revolutions of the engine. The ECU takes over and cuts current to the AC when this happens and the ac light will start blinking. A turn the AC of then turn it back on and it's not blinking tells you the problem is going to lead to no AC if you don't get it fixed.
Buy an evo
If its flickering its most likely a short
reset it and try again or contact Microsoft
If the AC light is blinking in the Toyota 98 Sienna, it means that something is internally wrong with your AC, it has stopped working, and it is recommended that you take it to the dealer to repair. This is not a very specific answer, but that is exactly what it says in the user manual. I find if I stop, turn off the car and AC for about 15 minutes, then restart, it will work again, until a week later and I have to repeat the process.
Sorry guys but from experance with 2.0 DOHC 16 valve that blinking hold light means your transmission is about to stop working with mine it started blinking and with in a half an hour of driven the tranny breaks and you loose all gears and the only way to fix is a new transmission or to have it completely rebuilt and a new one from Mazda is about $2100
A blinking AC light on your 1992 Chevy pick-up typically means that your vehicle is low on refrigerant causing the compressor to cycle too often. There are also bulletins suggesting polishing your control head terminals, and ensuring that the controller is not being falsely disabled.
You have to use the wrench in your old spy phone to get a tool click on the red blinking light.
it is probably the charging indicator. if it doesn't stop at some point like the next day u may need a new battery