Golf 3 TDI GT: Common Electronics Problems

Hello, I'm having the following problem. When my car is cold and I start it, the ABS light comes on, and the air conditioning can only be used to a limited extent, meaning it doesn't really turn on at all. It only starts working after I've been driving for a while, and then the ABS light also goes out. Is there a connection between the ABS and the air conditioning? I've read the error codes with VAGCOM, but there are no errors, or I can't even access the ABS control unit until the light goes out. And then, even when it's off, it doesn't show any errors.

Has anyone experienced a similar problem before, or can someone help me?

The windshield wipers also don't respond when they are cold.
Can anyone help me?

To be clear from the outset: My following statements are purely speculations.

I can't imagine that the ABS and the windshield wipers are connected to the same fuse. Either you have a major grounding problem (check the ground distribution block near the fuse box), or there's a problem in the central electrical system, even before the incoming voltage is distributed to the individual fuses.

If even more components fail (rear window heater, other large power consumers), it could be the X-relay (a relief relay that deactivates non-essential consumers during engine start). If the rear window heater and other components are still running, I suspect the central electrical system (the fuse box) is faulty.

As I said, these are just speculations, as I don't have a wiring diagram available at the moment.

Regards,
Sure, here's the translation:

"Guste" is a German word that means "gust" or "gust of wind." It can also be used to describe a sudden burst of something, such as laughter or anger.

I'm going to try to figure out this "mass point" thing. Because when I park the car and get back in a short time later, everything works fine. It only happens when the car is really cold.

Okay, the mass point is all good.
Where can I find this X-relay? What exactly is it?

paddy84 wrote:

Where can I find this X-relay, and what exactly is it?

You should check the wiring diagram. Alternatively: Turn on the ignition, turn on the ventilation, and remove one relay at a time until the ventilation stops working.