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BDifficulty 2/5

In a passenger car with a manual gearbox and mechanical parking brake, the service brakes fail and pumping the pedal does not restore braking. Which action may help reduce speed?

In a passenger car with a manual gearbox and mechanical parking brake, the service brakes fail and pumping the pedal does not restore braking. Which action may help reduce speed?

Correct answer

Shift progressively to suitable lower gears and, if necessary, gently apply the mechanical parking brake.

Select suitable lower gears progressively to use engine braking and, if necessary, apply the mechanical parking brake gently without locking the wheels. Retain control, warn others and seek a safe place; do not switch off the engine. This does not guarantee stopping within any distance. This answer does not describe electronic parking-brake systems.

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  • Hold the clutch down in neutral so that the engine brakes.

  • Shift progressively to suitable lower gears and, if necessary, gently apply the mechanical parking brake.

  • Pull the parking brake forcefully as the only measure.

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