Lexus IS220d 2012 Manual page 239


Sounds and vibrations caused by the ABS, brake assist, VSC, TRC and hill-
start assist control systems

A sound may be heard from the engine compartment if the brake pedal is
depressed repeatedly when the engine is started or just after the vehicle
begins to move. This sound does not indicate that a malfunction has
occurred in any of these systems.

Any of the following conditions may occur when the above systems are
operating. None of these indicates 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.
• The brake pedal may pulsate slightly when the ABS is activated.
• The brake pedal may move down slightly after the ABS is activated.

Hill-start assist control is operational when

The shift lever is in the D or S position.

The brake pedal is not depressed.

The vehicle rolls backward.

EPS operation sound
When the steering wheel operates, a motor sound (whirring sound) may be
heard. This does not indicate a malfunction.

Reduced effectiveness of EPS
The effectiveness of EPS is reduced to prevent the system from overheating
when there is frequent steering input over an extended period of time. The
steering wheel may feel heavy as a result. Should this occur, refrain from
excessive steering input or stop the vehicle and turn the engine OFF. The
system should return to normal within 10 minutes.

If the slip indicator comes on
It may indicate a malfunction in the VSC, TRC or hill start assist control
function. Contact any authorized Lexus dealer or repairer, or another duly
qualified and equipped professional.
IS250/220d/200d_EE
2-4. Using other driving systems
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