CADILLAC LYRIC 2023 Owners Manual

Cadillac Lyriq Owner Manual (GMNA-Localizing-U.S./Canada-15644413) -
2023 - CRC - 2/23/22
320 Vehicle Care
High Voltage Battery
After extended storage, it is
possible that the vehicle may
not operate. If this happens,
the high voltage battery may
need to be plugged in and
charged.
Park Brake and
P (Park) Mechanism
Check
{Warning
When you are doing this
check, the vehicle could
begin to move. You or
others could be injured and
property could be damaged.
Make sure there is room in
front of the vehicle in case it
begins to roll. Be ready to
apply the regular brake at
once should the vehicle
begin to move.Park on a fairly steep hill, with
the vehicle facing downhill.
Keeping your foot on the
regular brake, set the Electric
Parking Brake (EPB).
.To check the EPB's holding
ability: With the propulsion
system active and the
electric drive unit in
N (Neutral), slowly remove
foot pressure from the
regular brake pedal. Do this
until the vehicle is held by
the EPB only.
.To check the P (Park)
mechanism's holding ability:
With the propulsion system
active, shift to P (Park). Then
release the EPB and slowly
remove foot pressure from
the regular brake pedal.
Contact your dealer if service
is required.
Wiper Blade
Replacement
Windshield wiper blades
should be replaced
periodically. See the
Maintenance Schedule 0376.
Replacement blades come in
different types and are
removed in different ways. For
proper type and length, see
Maintenance Replacement
Parts 0380.
Caution
Allowing the wiper arm to
touch the windshield when
no wiper blade is installed
could damage the
windshield. Any damage that
occurs would not be
covered by the vehicle
warranty. Do not allow the
wiper arm to touch the
windshield.

Cadillac Lyriq Owner Manual (GMNA-Localizing-U.S./Canada-15644413) -
2023 - CRC - 2/23/22
Vehicle Care 321
To replace the windshield
wiper blade:1. Pull the windshield wiper assembly away from the
windshield.
2. Press the button in themiddle of the wiper arm
connector, and pull the
wiper blade away from the
arm connector.
3. Remove the wiper blade.
4. Reverse Steps 1–3 for wiper blade replacement.
Windshield
Replacement
Driver Assistance
Systems
If the windshield needs to be
replaced and the vehicle is
equipped with a front camera
sensor for the Driver
Assistance Systems, a GM
replacement windshield is
recommended. The
replacement windshield must
be installed according to GM
specifications for proper
alignment. If it is not, error
messages may display,
or these systems may not
work properly or at all. See
your dealer for proper
windshield replacement.
Acoustic and Heated
Wiper Park (HWP)
Windshield
The vehicle is equipped with
an acoustic and HWP
windshield. If the windshield
needs replacement, make sure to use a GM compatible
acoustic and HWP windshield
to retain its features
Gas Strut(s)
Your vehicle may be equipped
with gas strut(s) to provide
assistance in lifting and
holding open the hood/trunk/
liftgate system in full open
position.
{Warning
If the gas struts that hold
open the hood, trunk, and/or
liftgate fail, you or others
could be seriously injured.
Take the vehicle to your
dealer for service
immediately. Visually inspect
the gas struts for signs of
wear, cracks, or other
damage periodically. Check
to make sure the hood/
trunk/liftgate is held open
with enough force. If struts
are failing to hold the hood/
(Continued)

Cadillac Lyriq Owner Manual (GMNA-Localizing-U.S./Canada-15644413) -
2023 - CRC - 2/23/22
322 Vehicle Care
Warning (Continued)
trunk/liftgate, do not
operate. Have the vehicle
serviced.
Caution
Do not apply tape or hang
any objects from gas struts.
Also do not push down or
pull on gas struts. This may
cause damage to the
vehicle.
See Maintenance Schedule
0 376.
Hood
Trunk
Liftgate
Headlamp Aiming
Front Headlamp
Aiming
Headlamp aim has been preset
and should need no further
adjustment.
If the vehicle is damaged in a
crash, the headlamp aim may
be affected. If adjustment to
the headlamps is necessary,
see your dealer.

Cadillac Lyriq Owner Manual (GMNA-Localizing-U.S./Canada-15644413) -
2023 - CRC - 2/23/22
Vehicle Care 323
Bulb Replacement
For the proper type of
replacement bulbs, or any bulb
changing procedure not listed
in this section, contact your
dealer.
Caution
Do not replace incandescent
bulbs with aftermarket LED
replacement bulbs. This can
cause damage to the vehicle
electrical system.
LED Lighting
This vehicle has several LED
lamps. For replacement of any
LED lighting assembly, contact
your dealer.
Electrical System
High Voltage Devices
and Wiring
{Warning
Exposure to high voltage
can cause shock, burns, and
even death. The high voltage
components in the vehicle
can only be serviced by
technicians with special
training.
High voltage components
are identified by labels. Do
not remove, open, take
apart, or modify these
components. High voltage
cable or wiring has orange
covering or labels. Do not
probe, tamper with, cut,
or modify high voltage cable
or wiring.
Electrical System
Overload
The vehicle has fuses and
circuit breakers to protect
against an electrical system
overload.
When the current electrical
load is too heavy, the circuit
breaker opens and closes,
protecting the circuit until the
current load returns to normal
or the problem is fixed. This
greatly reduces the chance of
circuit overload and fire
caused by electrical problems.
Fuses and circuit breakers
protect the wires that provide
the power to the devices in
your vehicle.
If there is a problem on the
road and a fuse needs to be
replaced, the same amperage
fuse can be borrowed. Choose
some feature of the vehicle
that is not needed to use and
replace it as soon as possible.

Cadillac Lyriq Owner Manual (GMNA-Localizing-U.S./Canada-15644413) -
2023 - CRC - 2/23/22
324 Vehicle Care
To check a fuse, look at the
band inside the fuse. If the
band is broken or melted,
replace the fuse. Be sure to
replace a bad fuse with a fuse
of the identical size and rating.
Replacing a Blown Fuse
1. Turn off the vehicle.
2. Locate the fuse puller in theunderhood compartment
fuse block.
3. Use the fuse puller toremove the fuse from the
top or side, as shown above.

Cadillac Lyriq Owner Manual (GMNA-Localizing-U.S./Canada-15644413) -
2023 - CRC - 2/23/22
Vehicle Care 325
4. If the fuse must be replacedimmediately, borrow a
replacement fuse with the
same amperage from the
fuse block. Choose a vehicle
feature that is not needed
to safely operate the
vehicle. Repeat Steps 2–3.
5. Insert the replacement fuse into the empty slot of the
blown fuse.
At the next opportunity, see
your dealer to replace the
blown fuse.
Headlamp Wiring
An electrical overload may
cause the lamps to go on and
off, or in some cases to remain
off. Have the headlamp wiring
checked right away if the
lamps go on and off or
remain off.
Windshield Wipers
If the wiper motor overheats
due to heavy snow or ice, the
windshield wipers will stop
until the motor cools and will
then restart.
Although the circuit is
protected from electrical
overload, overload due to
heavy snow or ice may cause
wiper linkage damage. Always
clear ice and heavy snow from
the windshield before using
the windshield wipers.
If the overload is caused by an
electrical problem and not
snow or ice, be sure to get it
fixed.
Fuses and Circuit
Breakers
The wiring circuits in the
vehicle are protected from
short circuits by a combination
of fuses and circuit breakers.
This greatly reduces the
chance of damage caused by
electrical problems.
{Danger
Fuses and circuit breakers
are marked with
their ampere rating. Do not
exceed the
specified amperage rating
when replacing fuses and
circuit breakers. Use of an
oversized fuse or circuit
breaker can result in a
vehicle fire. You and others
could be seriously injured or
killed.
{Warning
Installation or use of fuses
that do not meet GM’s
original fuse specifications is
dangerous. The fuses could
fail, and result in a fire. You (Continued)

Cadillac Lyriq Owner Manual (GMNA-Localizing-U.S./Canada-15644413) -
2023 - CRC - 2/23/22
326 Vehicle Care
Warning (Continued)
or others could be injured or
killed, and the vehicle could
be damaged.
See Accessories and
Modifications 0308 and
General Information 0308.
To check or replace a blown
fuse, see Electrical System
Overload 0323.
Underhood
Compartment Fuse
Block
To Access:
1. Open the hood. See Hood
0310.
2. The Underhood
Compartment Fuse Block is
under a cover and side
extension/shield in the
underhood compartment.
Unclip right side of shield
and remove the right side
access cover.3. To open the fuse blockcover, press the clips at the
side and back and pull the
cover up.
Caution
Spilling liquid on any
electrical component on the
vehicle may damage it.
Always keep the covers on
any electrical component.

Cadillac Lyriq Owner Manual (GMNA-Localizing-U.S./Canada-15644413) -
2023 - CRC - 2/23/22
Vehicle Care 327
A fuse puller is in the
underhood compartment fuse
block.The vehicle may not be
equipped with all of the fuses
and features shown. Fuses Usage
1 Spare
2 –
3 Spare
4 Spare
5 Spare
6 MSM/MBM
–
Memory Seat
Module/Memory
Bolster Module
–
7 Motor: PEEV/
PCEV & ECFV/
CHFV
–Primary
Evaporator
Expansion Valve/
Secondary
Evaporator
Expansion Valve
and External
Condenser Flow
Valve/Condensing
Heater Flow Valve

Cadillac Lyriq Owner Manual (GMNA-Localizing-U.S./Canada-15644413) -
2023 - CRC - 2/23/22
328 Vehicle Care
Fuses Usage8 MTR MAIN COOL
VLV & ACEC
–
Motor Main
Coolant Valve and
Air Condition
Electric
Compressor
9 Motor: PECP &
Motor: ESSCP
–
Power Electronics
Coolant Pump and
Energy Storage
System
Coolant Pump
10 –
11 –
12 ECP_S & OBCM 2
–
Electrification
Control Processor
(Traction Power
Inverter Module 2)
& On Board
Charging Module 2
13 –
14 – Fuses Usage
15 TRLR PRK LAMPS
–
Trailer Park
Lamps
–
16 TRLR REV LAMP
–
Trailer
Reverse Lamp
–
17 –
18 GLBX DR RELSE
–
Glove Box Release
19 –
20 –
21 CHARGE PORT
DR MTR
–Charge
Port Door Motor
22 AC/DC INV MDL
–
Alternate Current/
Direct Current
Inverter Module
23 –
24 –
25 – Fuses Usage
26 Spare27 –
28 ETC MDL
–
Electronic Toll
Control Module
29 –
30 Rear Cargo APO
–
Rear Cargo
Auxiliary Power
Outlet
31 TRLR INTERFACE
MDL BATT
SOURCE 1
–
Trailer Interface
Module Battery
Source 1
32 Spare
33 Spare
34 ELM 5
–Exterior
Lighting Module 5
35 ELM 4
–Exterior
Lighting Module 4
36 –

Cadillac Lyriq Owner Manual (GMNA-Localizing-U.S./Canada-15644413) -
2023 - CRC - 2/23/22
Vehicle Care 329
Fuses Usage37 –
38 ELM 7
–Exterior
Lighting Module 7
39 ELM 3
–Exterior
Lighting Module 3
40 ECP_E_Batt
SOURCE 1 &
ECP_E_Batt
SOURCE 3
–Elec-
trification Control
Processor
(Traction Power
Inverter Module 1)
Source 3 and 1
41 DSP & AIR
SPRINGS 2
–Door
Switch Panel and
Suspension
Control Leveling 2 Fuses Usage
42 SEAT POS SW &
VKM SNSR/RLH
SNSR
–Seat
Position Switch
and Virtual Key
Module Sensor/
Rain Light
Humidity Sensor
43 SCL & CHIM MDL
–
Steering Column
Lock and Charge
Interface Module
44 PSM & AERO SH
–
Power Sounder
Module and Aero
Shutter
45 RFA MDL & HFC
MDL
–Remote
Function Actuator
Module and
Handsfree Closure
Module Fuses Usage
46 AFL/AHL & PFA
Module
–Adaptive
Forward Lighting/
Automatic
Headlamp Leveling
and Pedestrian
Friendly Alert
Module
47 LIT GRILLE/FR
PRK EMBLEM &
SADS
–Lit Grille/
Front Park
Emblem and Semi
Active Damping
System
48 PWR T/GATE
–
Power Tailgate
49 –
50 MTR WDW
LIFTER LT
–
Motor Window
Lifter
51 AIR SPRINGS 1
–
Suspension
Control Leveling 1