How do I change the battery on a 2008 VW Passat Key Fob?

The red light on the key fob flashes when I try to lock the car. Worked fine all day and now it's not working. I looked online and it shows you can change the battery but I wanted to clarify if in doing this, the fob has to be reset by the dealer or will it be okay?How do I change the battery on a 2008 VW Passat Key Fob?Replacing the battery in the key won't require anything to be reprogrammed. To replace the battery, flip open the switch blade key, and use a small flat blade screwdriver to pry at the gap between the top and bottom halves. Pull the halves apart, and with your fingers you will be able to pull the battery cover off the bottom half of the key (separate the front from the back now).How do I change the battery on a 2008 VW Passat Key Fob?You should have the information in your vehicle handbook. I am pretty sure it will not affect the setting but it may be that you have to do this in close proximity to your car or within a set time scale.How do I change the battery on a 2008 VW Passat Key Fob?figure it out

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