Tiffin Motorhomes Wayfarer TM 2021 Series Owner's Manual page 22

WARNING LIGHTS CONTINUED
SERVICE ENGINE SOON
(SES)
SES LIGHT IS
CONTINUOSLY LIT:
A continuously lit SES light means
that one of the engine's emission
control systems may be
malfunctioning. The malfunction
may be a temporary condition.
Examples of temporary conditions
which may cause the SES light to
illuminate are:
1. The motorhome has run out
of fuel. (The engine may misfire or
run poorly).
2. Poor fuel quality or water
in the fuel system.
3. The fuel cap may not have
been properly installed and/or
securely tightened
Filling the fuel tank with good
quality fuel and/or properly
installing the gas cap can correct a
temporary malfunction. After
three driving cycles without these
or any temporary malfunctions
present, the SES light should turn
off. (A driving cycle consists of a
cold engine startup followed by
mixed city/highway driving).
If the SES light remains on after 3
engine cycle, contact an
authorized Ford Dealership for
Maintenance
2021 Wayfarer TM Series Owners Manual V1.0
SERVICE ENGINE SOON (SES)
CONTINUED:
SES LIGHT IS FLASHING:
A flashing SES light means the engine is
misfiring, Contact an authorized Ford
Dealership for maintenance.
ENGINE OIL
Illuminates when the engine oil pressure
is low, Add engine oil as soon as
possible. Use engine oil specified by
Ford Motor Company. If the oil light
remains luminated, contact an authorized
Ford Dealership for maintenance.
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