This is the first issue I’ve had so far. Bought about 2 weeks ago, post salvage from a accident. I have a full make up on the report of all work done and there is no indication of this car having a computer issue. 40k miles with no serious work required, pre-accident.

Car is nothing short of brand new. Drives, feels runs and responds like new. When I went out for lunch last night, it was raining, got back and parked my car. Came out to leave and my fob wasn’t able to unlock the car. When I try to start it, dash says, (reduced power) (low fuel) only dash lights work. No interior lights. Brand new battery, tried to jump it anyway.
No help. Change battery in Fob, no help. Already looking into getting the car to Conte’s in Vineland. But if anyone can help me. Please I’m desperate.

It won’t let me clear all the back to odometer. It only shows “Reduced Engine Power”

No interior lights point to fuse 2 in the interior panel. Pull it and if its good take a flashlight to shine through the other fuses and check them all. Sometimes the underhood light will cause a short blowing this fuse. Disconnect if suspected and fuse 2 blows instantly. Lighted Vanity mirrors can do the same.

Try holding the unlock and lock button down till the car beeps or flashes lights. This is a reset needed after key battery fob replacements. Also check that the metal fingers are not broke inside the key fob making connection with battery. Check their tension as well. Also check circuit board solders and connections.

Reduced engine power can be the tps sensor on throttle body. Check connection.

Check grounds on chasis and engine as well. Hope this helps

So, After almost two days the car now is back to normal. Fob works and car starts. I’m told because the battery was changed, without saving the memory to the computer it triggered the theft mode causing the car to act as it did. And has now reset.