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C. Walker, Jr.
C. Walker, Jr., Auto Mechanic
Category: Toyota
Satisfied Customers: 710
Experience:  Shop training and hands on experience.
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I replaced the 12v battery in my 08 prius. check engine

Customer Question

I replaced the 12v battery in my 08 prius. check engine light is on when I insert key I hear the clicking like it wants to start but does not.
Submitted: 1 year ago.
Category: Toyota
Expert:  C. Walker, Jr. replied 1 year ago.

I suspect that the new battery was not fully charged. Sometimes even brand new ones will lose charge sitting on the shelf for so long. You will need to do a trickle charge on the 12v battery. They do sell these chargers at the local parts stores. It must charge at less than 4 amps or damage can occur.

Expert:  C. Walker, Jr. replied 1 year ago.

You can jump start the car under the hood at the jumper terminals but it is not good on the alternator to force it to try and charge a low battery.