Lexus RX450h 2010, Owner'S Manual

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5-2. Steps to take in an emergency
RX450h_U
If the hybrid system will not start
Reasons for the hybrid system not starting vary depending on the situation.
Check the following and perform the appropriate procedure:
■ The hybrid system will not start even though the correct starting
procedure is being followed. (
→
P. 166)
One of the following may be the cause of the problem:
●
The electronic key may not be functioning properly. (
→
P. 615)
●
There may be a malfunction in the immobilizer system. (
→
P. 115)
●
There may be a malfunction in the steering lock system.
●
The hybrid system may be malfunctioning due to an electrical
problem such as an open circuit or a blown fuse. However,
depending on the type of malfunction, an interim measure is avail-
able to start the hybrid system. (
→
P. 611)
■
The interior lights and headlights are dim, or the horn does not
sound or sounds at a low volume.
One of the following may be the cause of the problem:
●
The 12-volt battery may be discharged. (
→
P. 617)
●
The 12-volt battery terminal connections may be loose or cor-
roded.
■ The interior lights and headlights do not turn on, or the horn does
not sound.
One of the following may be the cause of the problem:
●
One or both of the 12-volt battery terminals may be discon-
nected.
●
The 12-volt battery may be discharged. (
→
P. 617)
Contact your Lexus dealer if the problem cannot be repaired, or if
repair procedures are unknown.