Why does it need to be changed?
Brake fluid must withstand operating temperatures of up to 230°C but over time absorbs water which boils at 100°C. As the water boils, it turns to compressible vapour which means you won't be able to brake as efficiently.
What happens if it isn't changed?
If too much moisture builds up, the brake fluid can boil while you're braking, seriously affecting performance. It can cause the brakes to fail. A spongy feel to the brake pedal shows you this has started to happen.
What we do
We check the level and look for leaks. We drain the system and fill it with new brake fluid. We test the system and record it in your service book.
First, at year 3 and then every 2 years then on.
Benefits of having my brake fluid changed
1. Peace of mind knowing you'll be able to stop effectively
2. Prevents contamination that could lead to a more expensive repair
3. An authorised Volkswagen stamp in your service book