How to re-learn ECU without disconnecting battery?
Wait for all idiot lights to turn off (last one will be the the throttle indicator – the two half-moons w/ a lightning bolt between them). 3). Over the course of 15 seconds, slowly depress the throttle all the way to the floor.
What does it mean when your car starter is not engaging?
There are a few known symptoms of a starter that is not engaging. Here are some of the most common ones. This is the most obvious sign of a bad starter. When the ignition is turned on, an electrical signal is sent to the starter relay.
What can you do with a car battery that has been disconnected?
With the battery cables disconnected, you can safely perform repairs on electrical components of the vehicle. If you just need to put in a new car battery, it can be done in a few simple steps. After the battery is disconnected, unscrew the brackets that hold it in its tray.
Do you need to reset the readiness code after a battery replacement?
For a short-term battery replacement, no recoding should be necessary, but IF the ECU wants the Readiness Code reset for some reason, it’s no big deal and all you need to do is drive your TDI.
How to diagnose and replace a starter?
The starter motor is working, but the gear is unable to engage the starter ring to rotate the engine. The usual remedy for this is to replace the starter. Take the starter out and have it tested at your local Advance store for free to verify your finding of a defective starter. You’ll also have to have the core in hand when buying the new one.
What causes a car to start after disconnecting the battery?
Click to expand… Weak battery and poor connection at the terminals (dirty, corroded). That ‘click’ is very telling. Take the clamps off, clean the posts and the clamps with a wire brush, snadpaper or whatever and put it all back together. Speaking of corrosion, that sh!t is like cancer in the way it spreads.
What does the Bendix do on a car starter?
Resolving the whirring issue is easy: There’s a part inside the starter called the Bendix. This part pushes the starter gear out so it can engage the teeth on the flywheel or flexplate to rotate the engine.
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.