Lexus RZ450E 2023 - When the Horn Does Not Sound and the EV System Cannot be Started

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9-3. If the EV system will not start
9
When trouble arises
When the horn does not
sound 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
loose.
Contact your Lexus
dealer if the problem
cannot be repaired,
or if repair proce-
dures are unknown.