Hi i have a MPX-IG fuse keep burning at the driver kick panel. When it burnt, the Climate control unit do not work. cant turn on AC, thermostat do not work. If engine is on it becomes overheat.

Took it to autoparts, error codes were relating to oxygen sensors and the other one was too low / or too high voltage error code.

I do have a marine battery installed for my amps. I connect the positive wire to the batter up front and ground to body frame. The autopart guy think this is the problem.

I don't know where to start, lexus dealer is 2 hrs away. Should i bring to toyota dealers?

any advise/info is appreciated. Thanks

 

.....do you have the marine battery additional to the factory battery? If so, this could possibly be your issue, a simple test would be disconnecting the marine battery & seeing if the issue continues