2000 Audi A4 1.9TDI with 100,000+ miles. Super, well-maintained car. Comes on for 2 secs at start-up only. Checked the brake fluid level - OK. ABS warning light does not come on any time. All brake pads and discs replaced recently. Car parked at home facing up a small slope. Is it likely to be a cold weather thing related to the fluid level sensor (or something else). I feel it's something simple, because there is are no problems driving and braking (not tested it hard on wet roads though. Do owners sometimes remove ABS fuses to pass MoTs, ie the ABS does actually have a minor problem (I'm a bit cynical sometimes!? Any ideas? Dave