What happens when you change the battery on a car?
Replacing the battery or even simply disconnected the battery on a vehicle will cause the engine control unit (ECU) to reset and clear all the emission monitors (and trouble codes; if any existed). Emission monitors are needed to be READY or COMPLETE in order for the vehicle to pass the smog check.
Why does my car not pass emissions yet?
Something is wrong with the ECM. It should have reset itself. Once the battery was replaced, the computer ‘lost’ it’s memory of how the car was running, and it sets an emissions tag to ‘not ready’. This is why it will not pass emissions yet.
How to pass car inspection after changing battery?
4) get into the car, take it for a drive of various speeds, starting at 25 mph for about 1-5 miles….as time goes on, increase your speed to the LEGAL SPEED LIMITS on your roads…DO NOT SPEED. If you can, THEN get on the highway, and go the SPEED LIMIT for about 5-10 miles….
Can a car pass a smog test after battery was changed?
I was told it could not pass a smog test until the computer was reset; at a cost of $135.00.This car has always past before. What difference would this make if they are sticking the tester in the exhaust pipe?
Replacing the battery or even simply disconnected the battery on a vehicle will cause the engine control unit (ECU) to reset and clear all the emission monitors (and trouble codes; if any existed). Emission monitors are needed to be READY or COMPLETE in order for the vehicle to pass the smog check.
Something is wrong with the ECM. It should have reset itself. Once the battery was replaced, the computer ‘lost’ it’s memory of how the car was running, and it sets an emissions tag to ‘not ready’. This is why it will not pass emissions yet.
I was told it could not pass a smog test until the computer was reset; at a cost of $135.00.This car has always past before. What difference would this make if they are sticking the tester in the exhaust pipe?
Do you have to do the emissions test again?
Though failing and rejection are different things, in either case you will have to go through the test again. But wait, there’s more. It is possible that, after having the car repaired, it may still be rejected. It happens–a lot. But there is something you can do to pass the retest: Drive your car.