Lexus RZ450E 2023 - When the Interior Lights or Headlights Do Not Illuminate and the EV System Cannot be Started; When the Horn Sounds at a Low Vol- Ume and the EV System Cannot be Started; When the Horn Sounds at a Low Volume and the EV System Can- Not be Started

510
9-3. If the EV system will not start
When the interior lights or
headlights do not illuminate
and the EV system cannot be
started
Cause Remedy
The 12-volt battery
may be discharged.
(P.506)
Restarting the EV
system using the
jumper (or booster)
cables. (P.526)
Contact your Lexus
dealer if the problem
cannot be repaired,
or if repair proce-
dures are unknown.
One or both of the
12-volt battery ter-
minals may be dis-
connected.
Check if a 12-volt
battery terminal is
disconnected.
Contact your Lexus
dealer if the problem
cannot be repaired,
or if repair proce-
dures are unknown.
When the horn sounds at a
low volume and the EV sys-
tem cannot be started
Cause Remedy
The 12-volt battery
may be discharged.
(P.506)
Restarting the EV
system using the
jumper (or booster)
cables. (P.526)
The 12-volt battery
terminal connec-
tions may be loose
or corroded.
The 12-volt battery
terminals may be
loose or corroded.