Toyota Camry Hybrid 2018 Owner's Manual page 508

508
7-2. Steps to take in an emergency
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:
● The 12-volt battery may be discharged. (→P. 512)
● One or both of the 12-volt battery terminals may be disconnected.
(→P. 424)
Contact your Toyota dealer if the problem cannot be repaired, or if repair
procedures are unknown.
Emergency start function
When the hybrid system does not start, the following steps can be
used as an interim measure to start the hybrid system if the power
switch is functioning normally.
Do not use this starting procedure except in case of emergency.
1
Set the parking brake.
2
Shift the shift lever to P.
3
Turn the power switch to ACCESSORY mode.
4
Press and hold the power switch for about 15 seconds while
depressing the brake pedal firmly.
Even if the hybrid system can be started using the above steps, the
system may be malfunctioning. Have the vehicle inspected by your
Toyota dealer.