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Which feature now guards against a rollaway on shift by wire vehicles?

  • A.Automatic selection of park when the driver's door opens
  • B.A mechanical interlock, which prevents the engine from being switched off unless park has been selected first
  • C.A warning lamp only
  • D.An electric parking brake that applies automatically, which holds the vehicle whatever gear has been selected

Answer: A

Controllers now select park automatically when the engine is stopped or the driver's door is opened with the vehicle stationary. Automatic parking brake application genuinely accompanies it, which makes the last option a real part of the same solution. Most errors here come from carrying across a result from a neighbouring case where it does not hold. Reading the definition literally, rather than recalling a summary, avoids the usual confusion.

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