AUTO-START-STOP –
FREQUENTLY ASKED QUESTIONS
Why does the engine not always
stop when I expect it to?
The system is designed to work in a way
that complements other vehicle systems,
allowing them to operate at optimum
performance.
The system does not stop the engine if:
• The driver door is open.
• Your vehicle is at high altitude.
• The heated windshield is on.
• The engine is warming up.
• The outside temperature is too low or
too high.
• The battery charge is low.
• The battery temperature is outside the
optimal operating range.
• The engine is required to run to
maintain interior climate and reduce
fogging.
Why does the engine sometimes
restart when I do not expect it to?
The system is designed to work in a way
that complements other vehicle systems,
allowing them to operate at optimum
performance.
The system restarts the engine if:
• You switch the heated windshield on.
• You switch maximum defrost on.
• Your vehicle starts to roll downhill in
neutral.
• The engine is required to run to
maintain adequate brake system
assistance.
• The engine is required to run to
maintain interior climate and reduce
fogging.
Can I permanently switch the
system off?
No. The system plays an important role in
reducing the fuel consumption and the CO
2
emissions.
Will the frequent engine starts
cause parts to wear out?
Your vehicle has an enhanced battery and
starter motor that are designed for the
increased number of engine starts.
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Mustang (CZJ) Canada/Mexico/United States of America, enUSA, Edition date: 202407, DOM
Auto-Start-Stop (If Equipped)
English 
