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You are watching: Reset vw beetle after battery change


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My mechanic told me the reason why my throttle body makes noises when I turn off my car is because everytime the battery gets disconnected- the EPC needs to be reset or something. If not it can damage my throttle body. He also told me if its not reset your car will do funky things. And I"ve noticed a difference in my car in the way it drives.. No longer has power or much acceleration. Headlights will dim and come back up when rolling windows down. He will charge me $40. I"ve been driving like this for 3 months. Any suggestions?
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I"m sure we can tell you how to do it yourself, for free! Patrick.
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I"ve never had to reset anything after unhooking my battery. I would bet you have a bad connection or something, which would explain the dimming headlights.
Try this,1. Turn the key to the "ON" position, BUT DO NOT START THE CAR!2. Leave the key in the "ON" position for 3 minutes WITHOUT TOUCHING ANYTHING.3. After 3 minutes, turn key to the "OFF" position, then start the car as normal.Not 100% sure this is the solution, however, this is been said to allow the throttle to reset.One a separate note, what engine do you have in your car?You should update your profile with the details of your car.If you have a 1.8t there is an Aux water pump that runs when the car is turned of that is right below the throttle body. If you have a 1.8t, make sure it is not the Aux water pump running.
OBD Scan Tool Info
- http://cg-tower.com/forums/questio...le/60391-obd-scan-tools-software-options.htmlThermostat Info - http://cg-tower.com/forums/1-8-liter-turbo/58882-coolant-temp-sensor.html
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When you disconnect battery power, you need to do a Throttle Body Alignment (TBA), this is performed with a dealer level scan tool, like VCDS.How to do the Throttle Body Alignment with VCDS - YouTubeOn the older 2.0L engines that are Drive-By-Cable (AEG engine code), they have a nasty habit of not running until you do a TBA. Drive-By-Wire cars, the car will run, but it is still recommended to do the TBA once power is restored.Leaving the ignition on for X minutes doesn"t really do anything to help with a TBA. Throttle Bodies can make a high pitch whining noise, this is normal.The other items to be addressed when restoring battery power, relearn Pinch Protection/One Touch Up of the power windows, reset the clock and unlock the radio if needed.

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I never did a TBA on either of my cars after disconnecting the battery and never had a problem. No issues on my 99 NB, which was drive by cable, or on my GTI.Sent from AutoGuide.com Free App
Your dimming lights have nothing to do with your throttle body (TB) however, whenever power is lost to the TB, a throttle body alignment (TBA) is required but you do not need a VW level scan tool to do this, the Ross-Tech scan tool is more than capable. If the TB is not properly aligned, this can cause idle and/or other engine performance issues.
Youth ages, immaturity is out grown, ignorance can be educated and drunkenness sobered.....But stupid, lasts forever.
Headlights will dim and come back up when rolling windows down. He will charge me $40. I"ve been driving like this for 3 months. Any suggestions?
Headlight dimming when putting windows up is somewhat normal for most cars. However the degree of dimming on your car cannot be quantified over the Internet. Power windows draw a lot of current.I have had issues where the dealer had left the cable from the fuse box on tip of the positive battery terminal loose and causes more headlight fluctuations and alternator whine in the Monsoon radio system.So the first thing I would check if the connections to the fuse box on top of the battery and the positive feed wire from the battery.You may need to check on ground wiring and you may have a problem with the alternator pulley?You should post a recording of your noisy throttle body and other 2.0l owners should be able to comment if yours is different.
OBD Scan Tool Info
- http://cg-tower.com/forums/questio...le/60391-obd-scan-tools-software-options.htmlThermostat Info - http://cg-tower.com/forums/1-8-liter-turbo/58882-coolant-temp-sensor.html