Cadillac Lyriq Owner Manual (GMNA-Localizing-U.S./Canada-15644413) -
2023 - CRC - 7/28/22
Vehicle Care
257
If it is not possible to charge the vehicle
with the charge cord left plugged in, be sure
to fully charge the high voltage battery
before storing. The vehicle will stop
maintenance of the 12-volt battery if the
high voltage battery state of charge gets
too low.
When storing the vehicle on a long-term
basis:
‐
Keep the high voltage battery state of
charge at 30%.
‐
Attach an AGM/VRLA compatible battery
tender or trickle charger to the 12-volt
battery.
‐
Keep the remote key more than 3 m
(10 ft) away from the vehicle.
12-volt Battery
{
Warning
Batteries have acid that can burn you and
gas that can explode. You can be badly
hurt if you are not careful. Always wear
eye protection. See
for tips on working around
a battery without getting hurt.
Do not disconnect the 12-volt battery during
storage.
A trickle charger may be attached to the
12-volt battery terminals or trickle charge
from the underhood remote positive (+) and
negative (
–
) terminals. See
for location of these
terminals.
Caution
The vehicle is equipped with an AGM/
VRLA 12-volt battery, which can be
damaged by using the incorrect type of
trickle charger. An AGM/VRLA-compatible
charger must be used, with the
appropriate setting selected. Follow the
trickle charger manufacturer instructions.
With a trickle charger connected to the
12-volt battery, the vehicle will still monitor
the 12-volt battery daily, but it will not use
energy from the high voltage battery for
maintenance.
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.
