Volvo XC90: Rear Collision Warning - DRIVER SUPPORTVolvo XC90: Rear Collision Warning

(Option/accessory.)

(Warning of collision from the rear.)

The Rear Collision Warning1 (RCW) function can help the driver avoid rear-end collisions from vehicles approaching from behind.

The function can alert drivers of following vehicles of the risk of a collision by rapidly flashing the turn signals.

If, at a speed below 30 km/h (20 mph), the function detects that the vehicle is in danger of being hit from behind, the seat belt tensioners may tension the front seat belts. The Whiplash Protection System will also be activated in a collision.

Immediately before a collision from behind, the function may also activate the brakes in order to reduce the forward acceleration of the vehicle during the collision. However, the brakes will only be applied if your vehicle is stationary. The brakes will be immediately released if the accelerator pedal is depressed.

The function is automatically activated each time the engine is started.

WARNING

  • The function is supplementary driver support intended to facilitate driving and help make it safer – it cannot handle all situations in all traffic, weather and road conditions.
  • The driver is advised to read all sections in the Owner's Manual about this function to learn of its limitations, which the driver must be aware of before using the function.
  • Driver support functions are not a substitute for the driver's attention and judgment. The driver is always responsible for ensuring the vehicle is driven in a safe manner, at the appropriate speed, with an appropriate distance to other vehicles, and in accordance with current traffic rules and regulations.

1 This function is not available on all markets.

Symbols and messages for steering assistance during collision risks
A number of symbols and messages related to steering assistance may be displayed in the instrument panel. Several examples are provided below. A text message can be erased by briefly pressing the button ...

Rear Collision Warning limitations
(Option/accessory.) (Warning of collision from the rear.) In some situations, it may be difficult for Rear Collision Warning (RCW) to warn the driver of a collision risk. This may be the case if: the vehicle ...

See also:

Telemetics Unit (TMU). Repair procedures
Removal 1. Disconnect the negative (-) battery terminal. 2. Remove the glove box housing. 3. Disconnect the cables and connector (A) from the MTS unit. [Audio type] [AVN type] 4. Remove the MTS unit after ...

Output Speed Sensor. Description and Operation
Description The output speed sensor (A) is a vital unit that measures the rate of rotation of the transaxle's turbine shaft and output shaft, and delivers the readings to the Transaxle Control Module(TCM). ...

Troubleshooting
Troubleshooting Symptom Possible cause Remedy Hard steering Improper front wheel alignment Excessive turning resistance of lower arm ball joint Low tire pressure No power assist Correct Replace Adjust ...