Top Tier Fuel (Petrol); Recommended Fuel (Petrol) - Cadillac XT4 Owner's Manual

262 DRIVING AND OPERATING
an alert and chime may be provided.
Steer the vehicle to dismiss. LKA may
become temporarily unavailable after
repeated false steering alerts.
When the System Does Not
Seem to Work Properly
The system performance may be
affected by:
Close vehicles ahead.
Sudden lighting changes, such as
when driving through tunnels.
Banked roads.
Roads with poor lane markings,
such as two-lane roads.
If the LKA system is not functioning
properly when lane markings are
clearly visible, cleaning the
windscreen may help.
A camera blocked message may
display if the camera is blocked. Some
driver assistance systems may have
reduced performance or not work at
all. An LKA or LDW unavailable
message may display if the systems
are temporarily unavailable. This
message could be due to a blocked
camera. The LKA system does not
need service. Clean the outside of the
windscreen behind the rearview
mirror.
LKA assistance and/or LDW alerts
may occur due to tar marks, shadows,
cracks in the road, temporary or
construction lane markings, or other
road imperfections. This is normal
system operation; the vehicle does not
need service. Turn LKA off if these
conditions continue.
Fuel

Top Tier Fuel (Petrol)

GM recommends the use of TOP TIER
Detergent Gasoline to keep the engine
clean, reduce engine deposits, and
maintain optimal vehicle performance.
Look for the TOP TIER Logo or see
www.toptiergas.com for a list of TOP
TIER Detergent Gasoline resellers and
applicable countries.
Recommended Fuel
(Petrol)