K53

Module 26 of 26

Brakes, tyres and warning lights

Brakes, tyres and the warning lamps that report on both. The examiner wants to know which faults make a vehicle unroadworthy, not how a disc brake works.

The systems that stop you, the rubber that lets them work, and the dashboard lamps that mean pull over now rather than book a service next week.

Two brakes with two jobs

The footbrake is the service brake, used for all normal slowing and stopping. Brake in a straight line before a turn, not while you are in it — a vehicle that is braking and turning at once is asking the tyres to do two things with one grip budget.

The parking brake holds a stopped vehicle, including on a slope. It is not a second service brake, though it is what you reach for if the footbrake fails. You may not leave a vehicle unattended without setting it.

The rest of this lesson

  • What ABS does and does not do
  • One millimetre, everywhere
  • Check pressures cold
  • The three lamps that mean stop
  • Two gauges that are not warnings

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