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4-5. Using the driving support systems
■ When the Crawl Control system is operated continuously
This may cause the brake actuator to overheat. In this case, the Crawl Control system will
stop operating, a buzzer will sound, the Crawl Control indicator will turn off after flashing
and the “TRAC OFF” will be shown on the multi-information display. In this case, quickly
stop the vehicle in a safe place and give the actuator adequate time to cool off. Refrain
from using the system until the message goes off. (The vehicle can be driven normally
during this time.)
■ If the automatic transmission system overheats
The system will cease operation, a buzzer will sound and a warning message will be dis-
played to alert the driver. Stop the vehicle in a safe place until the warning message turns
off. (P. 524)
■ Sounds and vibrations caused by the Crawl Control system
● A sound may be heard from the engine compartment when the engine is started or just
after the vehicle begins to move. This sound does not indicate that a malfunction has
occurred in Crawl Control system.
● Either of the following conditions may occur when the Crawl Control system is operat-
ing. None of these are indicators that a malfunction has occurred.
• Vibrations may be felt through the vehicle body and steering.
• A motor sound may be heard after the vehicle comes to a stop.
■ If the slip indicator comes on...
It may indicate a malfunction in the system. Consult your Lexus dealer.
■ When using Crawl Control
Do not rely solely on the Crawl Control. This function does not extend the vehicle’s
performance limitations. Always thoroughly check the road conditions, and drive
safely.
■ These conditions may cause the system not to operate properly
When driving on the following surfaces, the system may not be able to maintain a fixed
low speed, which may result in an accident:
● Extremely steep inclines.
● Extremely uneven surfaces.
● Snow-covered roads, or other slippery surfaces.
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