How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask Toyota Service Your Own Question
Toyota Service
Toyota Service, Toyota Expert
Category: Toyota
Satisfied Customers: 4847
Experience:  30+ Yrs of auto experience, Award Winning Svc. Manager; Just Answer Customer's Choice Award Winner
Type Your Toyota Question Here...
Toyota Service is online now
A new question is answered every 9 seconds

I connected a battery reversed polarity, in a 07 tundra, 4.7

Customer Question

I connected a battery reversed polarity, in a 07 tundra, 4.7 v8. The check eng light is on and ABS light. The truck will start right up, but will not get above 1500 rpm, no radio, no elec windows, no 4w dr indication, no A/C, no light on OBD reader. what have I destroyed?
JA: Does the engine turn over? How old is the battery?
Customer: Starts up normally. the bat is new
JA: What year is your Tundra?
Customer: 07
JA: Are you hoping to fix this yourself? What have you tried so far?
Customer: Yes, limited to checking fuses.
Submitted: 1 year ago.
Category: Toyota
Expert:  Toyota Service replied 1 year ago.

Hello. Welcome to Just Answer. Please allow me to assist you. Look for the following fuse in the panel under the hood: ETCS. This is the fuse for the throttle motor. If it is blown, the engine will not accelerate. Additionally, the other units that are inoperative are also form blown fuses. Anytime you hook the battery up backwards, you will pop a minimum of 3 or 4 fuses.