How long does it take for a car computer to reset after disconnecting the battery?
How long does it take for a car computer to reset after disconnecting the battery?
Disconnecting the battery for a short time may not do the trick because the car’s computer, or ECU, still has some current in it. Waiting for over 15 minutes after disconnecting the engine will help ensure the equipment is reset.
What happens when you disconnect the battery in a car?
When the battery is disconnected this provides the reset signal that the PATS system is looking for. There are several “gangs” inside the ignition switch. A set of wiring diagrams would be needed to confirm which fuses should be “on in start/run”. It would then be possible to test the the fuse to see if the circuit is acting like it should.
How to do battery disconnect reconnect reset procedures?
Someone with some time and extra compassion lying around, provide a solution so that when you tell some to search “reset procedure” they will hopefully get THIS post in their top 10 search results. I found this while looking around at an unrelated search. This tells the steps, but not necessarily how to do them.
What happens to the PCM when the battery is disconnected?
The PCM is looking for the the “start/run” circuit to pulse which would be expected when the ignition key is turned on/off. But because of the switch fault this isn’t happening. When the battery is disconnected this provides the reset signal that the PATS system is looking for.
Is there a way to reset the Check Engine light?
Also, there are simpler methods to reset your check engine light. Most code readers will do this, and many cars have an onboard procedure that will blink the codes and then reset the light. The symptoms that you’re describing sound like a poor ground connection for the starter motor.
How do you disconnect a car battery?
How to Disconnect Your Vehicle’s Battery Step 1: Locate the Battery Step 2: Locate the Positive and Negative Terminals Step 3: Find the Right Wrenches Step 4: Unbolt the Cables Step 5: Remove the Battery Hold-Down Clamp If You’re Storing Your Vehicle
How do you disconnect auto battery?
Disconnect the battery then unscrew the brackets holding it in its tray. Car batteries are heavy so lift the battery up, out of its tray with care. Use diluted baking soda mixture with old toothbrush to brush the tray and connectors. Do not put the new battery before they dry.
When to replace a battery?
Most automobile owners want to replace their battery when it is 3-5 years old. Most battery manufacturers stamp a date code on the top of the battery. It’s almost always the first number and first letter. Or, you may find a date sticker on the top or side that looks like this:
Why are negative battery cable removed first?
The main reason for disconnecting the negative terminal on a car battery first is that the whole of the car body is linked to that negative terminal. Disconnecting it first removes all the possibility of a short between positive and negative without going direct to the battery negative terminal.
