Cadillac XT4 2023 Owner's Manual page 327

326 Service and Maintenance
overcome the seals and contaminate the
transfer case fluid. Contaminated fluid will
decrease the life of the transfer case and/
or axles and should be replaced.
Owner Checks and Services
Every Five Years
Replace brake fluid.
Every Seven Years
Replace Air Conditioning Desiccant every
seven years. The air conditioning system
requires maintenance every seven years.
This service requires replacement of the
desiccant to help the longevity and
efficient operation of the air conditioning
system. This service can be complex. See
your dealer.
Maintenance Schedule (Diesel)
Owner Checks and Services
Check the engine oil level. See Engine Oil
0 260.
Once a Month
Check the tyre inflation pressures. See
Tyre Pressure 0 288.
Inspect the tyres for wear. See Tyre
Inspection 0 294.
Check the windscreen washer fluid level.
See Washer Fluid 0 269.
Every Two Years
Replace brake fluid.
Engine Oil Change
Change engine oil and filter when indicated
by the Engine Oil Life System, 30 000 km,
or at one year, whichever comes first
(15 000 km or at six months under severe
driving conditions). When the CHANGE
ENGINE OIL SOON message displays, have
the engine oil and filter changed within the
next 1 000 km. The system must be reset.
Your dealer has trained service people who
will perform this work and reset the system.
It is also important to check the oil regularly
over the course of an oil drain interval and
keep it at the proper level.
Drain the diesel fuel filter of water when
the oil is changed or when the WATER IN
FUEL CONTACT SERVICE message displays.
Engine Air Filter Change
When the REPLACE AT NEXT OIL CHANGE
message displays, the engine air filter
should be replaced at the next engine oil
change. When the REPLACE ENGINE AIR
FILTER SOON message displays, the engine
air filter should be replaced at the earliest
convenience. Reset the engine air filter life
system after the engine air filter is replaced.
See Engine Air Filter Life System 0 263.
Air Conditioning Desiccant (Replace Every
Seven Years)
The air conditioning system requires
maintenance every seven years. This service
requires replacement of the desiccant to
help the longevity and efficient operation of
the air conditioning system. This service can
be complex. See your dealer.
Vehicle Inspection and Required Services
Inspect the following items when indicated
by the oil life system, at 30 000 km, or at
one year, whichever comes first. See Tyre
Rotation 0 294.
Check engine oil level and oil
life percentage. If needed, change engine
oil and filter, and reset oil life system.
See Engine Oil 0 260 and
Engine Oil Life System 0 262.
Check the air filter life percentage.
If necessary, replace the engine air filter
and reset the engine air filter life system.
See Engine Air Filter Life System 0 263.