On a very cold night, when I started the engine on my 2001 beetle, the radio lights began flashing

SOURCE: 2002 VW Beetle Temp gauge flashing, why?

the coolant temp sensor is by far the most common fault.the only other thing it could be is the sensor in the coolant header tank.if you disconect the 2 pin sensor from where you top the coolant up and bridge out the 2 pins in the connector with a bit of wire.if this cures the fault you know its the coolant level sensor.if it persists and its straight from a cold start then the coolant temp sensor is the most likley cause.hope this helps.

SOURCE: beetle wont start due to imbiliser light flashing

try another key , if it does the same with all keys it will need to be towed to dealer to have them re-coded. but that is what the light is saying that the computer doesn't recognize that key as it's own and thinks it is being stolen. hopefully it is just the one key and another one will let it work and save a tow bill.

SOURCE: 2001 beetle. epc light on. car won't start.

It sounds like your alternator is not charging. You may want to have it tested and replace/rebuild it if necessary. Many times the problem is that the brushes are worn in the alternator and it stops charging correctly. The brushes are usually attached to the voltage regulator and are replaceable if you have the parts and skill. You can also replace the voltage regulator/brush assembly as a unit.

Many parts stores will test your alternator for free.

If you need more help, post a comment.

Thanks,

Tim

SOURCE: I have a 2001 beetle with a 1.8T engine

Let it run. It should stop, it flashes until the engine warms up above 100 degrees. This is normal, They want you to go easy on the car until it warms up a little.

Testimonial: "thank you "

SOURCE: My headlights began flashing on

my durango does that too, its either the multi function switch (turn signal arm) or light switch, i haven't fixed it either