How fail-safe cooling works, When fail-safe mode is activated, 330 maintenance – FORD 2014 Explorer v.2 User Manual

Page 332

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How Fail-Safe Cooling Works

If the engine begins to overheat, the engine coolant temperature gauge
will move to the red (hot) area and:

The coolant temperature warning light will illuminate.

The service engine soon indicator will illuminate.

If the engine reaches a preset over-temperature condition, the engine
will automatically switch to alternating cylinder operation. Each disabled
cylinder acts as an air pump and cools the engine.

When this occurs the vehicle will still operate. However:
• The engine power will be limited.
• The air conditioning system will be disabled.
Continued operation will increase the engine temperature and the engine
will completely shut down, causing steering and braking effort to
increase.

Once the engine temperature cools, the engine can be restarted. Take
your vehicle to an authorized dealer as soon as possible to minimize
engine damage.

When Fail-Safe Mode is Activated

WARNING: Fail-safe mode is for use during emergencies only.
Operate the vehicle in fail-safe mode only as long as necessary to

bring the vehicle to rest in a safe location and seek immediate repairs.
When in fail-safe mode, the vehicle will have limited power, will not be
able to maintain high-speed operation, and may completely shut down
without warning, potentially losing engine power, power steering assist,
and power brake assist, which may increase the possibility of a crash
resulting in serious injury.

WARNING: Never remove the coolant reservoir cap while the
engine is running or hot.

330

Maintenance

2014 Explorer (exp)
Owners Guide gf, 2nd Printing, September 2013
USA
(fus)

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