2013 Volvo S60 Owner's Manual - Page 155

04 Driver support City Safety™ WARNING The laser sensor has certain limitations and its function may be reduced (or it may not function at all) in conditions such as heavy rain or snowfall, or by dense fog or thick, blowing dust or snow. Condensation, dirt, ice or snow on the windshield may also interfere with the sensor's function. NOTE Cause The area of the windshield in front of the sensor is dirty or covered by ice or snow. The laser sensor's field of view is obstructed. Action Clean the windshield or remove the ice/snow. • • • Keep the windshield in front of the laser sensor free of ice, snow, dirt, etc. See page 152. Snow or ice on the hood deeper than 2 inches (5 cm) may obstruct the sensor. Keep the hood free of ice and snow. Do not mount or in any way attach anything on the windshield that could obstruct the laser sensor. Objects such as warning flags hanging from long objects on the roof or accessories such as auxiliary lights or protective arches on the front of the vehicle that are higher than the hood may also impede the sensor's function. Braking distance to the vehicle ahead increases on slippery road surfaces, which may reduce City Safety's capacity to avoid a collision. In situations like this, the DSTC system (see page 130) will help provide the best possible braking capacity and stability. City Safety™ emits a laser beam and measures the way in which the light is reflected. Therefore, vehicles or objects with low-reflective surfaces may not be detected. Normally, the license plate and taillight reflectors give the rear section of a vehicle ahead sufficient reflective surfaces to be detected. Remove the obstruction. 04 Troubleshooting If Windscreen Sensors blocked appears in the information display, this indicates that the City Safety™ laser sensor is obstructed in some way and cannot detect vehicles ahead of you, which means that the system is not functioning. However, this message will not be displayed in all situations in which the sensor is obstructed. For this reason, the driver must ensure that the area of the windshield in front of the sensor is always kept clean. The following table shows some of the situations that can cause the message to be displayed and suggested actions. 153