Have Toyota Questions? Ask a Mechanic for Answers ASAP
Hello, my name is ***** ***** I am a professional here at Justanswer. Thank you for your question and I will assist you with your concern.The usual cause of the problem you are having is caused by the computer having lost the closed throttle values due to the dead battery. You can usually resolve this by disconnecting the negative battery cable and then take some carb cleaner and a soft cloth and give the throttle body a good cleaning including the throttle body bore and the throttle plate of any sludge build up. After you have done this, reconnect the cable and start the engine and allow it to idle for 15 to 20 minutes to allow the computer to relearn the new closed throttle values. Once you have done this the throttle response should return in most cases. Give this a try and post back if for some reason this dose not work and we can work from there .
The low voltage from a dead battery can cause the warning lights to come on. Disconnecting the battery and cleaning the throttle body should fix this as well as clear the lights. Make sure the battery is fully charged before you start this repair as well.
Okay then the next steps would be to have the system scanned to see if there are any fault code setting.
If the light is on then there has to be a code, you can not retrieve theses code with a code reader.