o2 sensor VOLKSWAGEN JETTA 2016 User Guide

The self-dimming feature can be switched on and off with the switch on the inside mirror (2) A or (2) B. When self-dimming is activated, the indicator light (1) is on.
There are two sensors in the interior mirror housing:
x One sensor on the side facing the interior to measure light from the rear of the vehicle ⇒ fig. 89 A
(3) or ⇒ fig. 89 B (3).
x One sensor on the side facing the windshield to measure light from the front of the vehicle ⇒ fig. 89 C (4).
If the ignition is switched on, the mirror automatically darkens depending on the amount of light shining into the vehicle from the rear.
The self-dimming feature is deactivated when you shift the transmission into reverse or switch on the interior lights or the reading light.
Do not attach external navigation devices to the windshield or in the vicinity of the self-dimming inside
mirror ⇒ .
WARNING
The illuminated display on an external navigation device can cause the self-dimming inside mirror to malfunction, which can result in crashes and serious injuries.
x Malfunctions in the self-dimming function can result in the inside mirror being unable to evaluate the exact distance of vehicles in the rear or other objects.
If the light striking the sensor is filtered or blocked (such as by a sunshade), the self-dimming inside mirror will not work properly or may not work at all.
Outside mirrors

Fig. 91 In the front doors: Rotary knob for the mechanically adjustable outside mirrors.

NOTICE
x The radar sensors in the rear bumper can be damaged or become misaligned in low-speed impacts and parking maneuvers. The system can switch itself off or may be impaired as a result.
x Always keep the rear bumper clean and free of snow and ice so that the radar sensors can function properly. Do not cover the radar sensor area.
x The rear bumper may only be painted with vehicle paint that is approved by Volkswagen. Other paints may impair the function of the Blind Spot Monitor or cause it to malfunction.
x Sunlight may reduce the visibility of the indicator light in the outside mirror.
If the system does not function as described in this chapter or if your vehicle was involved in a collision, do not use the Blind Spot Monitor with Rear Traffic Alert. See an authorized Volkswagen dealer or an authorized Volkswagen Service Facility to have the system checked.
Indicator lights

WARNING
Failure to heed warning and indicator lights and instrument cluster text messages can result in a collision and serious personal injury.
x Never ignore warning and indicator lights or text WARNINGS.
x Always heed warning and indicator lights and take action where necessary.
NOTICE
Failure to heed warning and indicator lights or text WARNINGS can result in vehicle damage.
Blind Spot Monitor

Fig. 142 In the outside mirrors: Indicator lights for the Blind Spot Monitor.

Fig. 143 Rear of the vehicle: Radar sensor areas.

mirror A informs you about traffic to the left, and the indicator light in the passenger side outside mirror B informs you about traffic to the right of your vehicle.
Tinting on the side windows or aftermarket tinting films can interfere with the indicator lights in the outside mirrors or cause false readings.
Keep the glass in the outside mirrors clean and free of snow and ice, and do not cover the mirrors with stickers or other objects.
Radar sensors
The radar sensors are behind the rear bumper on the left and right ⇒ fig. 143. They are not visible from outside the vehicle. They monitor an area about 21 yards (20 meters) behind the vehicle as well as the blind spots on the left and right sides of the vehicle. The monitored area next to the vehicle is about one lane wide.
The width of the lane is not detected individually on each road, but is preprogrammed into the system. Because of this, the indicators may be incorrect when driving on narrow roads or driving in the center of two lanes. Likewise, vehicles that are two lanes away from you or stationary objects such as guard rails may also be detected and cause a false warning.
Driving situations

Fig. 144 A: Driving situation when passing with traffic behind your vehicle. B: Blind Spot Monitor indicator light in the driver side mirror.

Fig. 145 A: Driving situation when passing and merging into the lane. B: Blind Spot Monitor indicator light in the passenger side mirror.

WARNING
The Forward Collision Warning system technology cannot overcome the laws of physics and system-related limits. The driver is always responsible for braking in time. If the Forward Collision Warning system issues a warning, immediately apply the brake to slow the vehicle down or avoid the obstacle, depending on the traffic situation.
x Always adjust your speed and driving style to road, traffic, weather, and visibility condi-tions.
x The Forward Collision Warning system cannot prevent accidents and serious injuries on its own.
x The Forward Collision Warning system can issue unnecessary warnings in certain com-plex driving situations, for example, at traffic islands.
x The Forward Collision Warning system can issue unnecessary warnings when its function is impaired, for example, if the radar sensor is dirty or if the position of the radar sensor has been changed.
x The Forward Collision Warning system does not react to people, animals, or vehicles crossing or approaching in the same lane.
x Always be prepared to take full control of the vehicle at all times.
Deactivate the Forward Collision Warning system if it does not work as described in this chapter, for example, if multiple unwanted warnings occur. Have the system checked by an authorized Volkswagen dealer or authorized Volkswagen Service Facility.
Displays

Fig. 147 In the instrument cluster display: Distance warning.

Radar sensor

Fig. 149 Behind the Volkswagen emblem: Radar sensor.

Fig. 150 Area around the radar sensor to be kept clean and free of obstructions.

should only be carried out by a qualified workshop ⇒  Parts, accessories, repairs, and modifications. Contact an authorized Volkswagen dealer or an authorized Volkswagen Service Facility for assis-tance.
Incorrectly performed repairs to the front end of the vehicle can change the position of the radar sen-sor and therefore impair the function of the Forward Collision Warning system. Repair work should only be carried out by a qualified workshop. Contact an authorized Volkswagen dealer or an author-ized Volkswagen Service Facility for assistance.
NOTICE
Switch off the Forward Collision Warning system if you suspect that the radar sensor has been damaged or if its position has been changed. This can help prevent further damage. Contact an authorized Volkswagen dealer or an authorized Volkswagen Service Facility to have the radar sensor realigned.
x The radar sensor can become misaligned if it is hit, for example, when parking the vehicle. Readjusting the sensor could impair the performance of the system or cause it to switch off.
x Repairs to the radar sensor require special knowledge and tools. Contact an authorized Volkswagen dealer or an authorized Volkswagen Service Facility for assistance.
x Remove snow with a brush, and remove ice with a solvent-free deicer spray.
Operating the Forward Collision Warning system (Front Assist)

The Forward Collision Warning system (Front Assist) should be switched off in the following situations
due to system limitations ⇒ :
x If the vehicle is being towed.
x If the vehicle is on a dynamometer test bed.
x If the vehicle is not being driven on public roads, for example, off-road or on a track.
x If the radar sensor malfunctions.
x If external force has affected the radar sensor, for example, after a rear-end collision.
x If the radar sensor is covered (even temporarily) by any accessories or other equipment, for exam-ple, auxiliary headlights.
x If the vehicle is being loaded onto a truck, ferry, or train.
WARNING
Failure to switch off the Forward Collision Warning system in the situations mentioned can cause accidents and serious personal injury.
System limits

Clean the wheels and under the door sills last. Use a different sponge or wash mitt.
WARNING
After the vehicle has been washed, the wet brakes or, in winter, brake discs or pads coated with ice, react slower and need longer stopping distances.
x Always dry the brakes and clean off any ice coatings with a few careful applications of the brake. Make sure not to endanger other motorists or cyclists or disobey legal requirements.
CAUTION
Sharp edges under the vehicle can cut exposed skin.
x Always protect your hands and arms from cuts on sharp metal edges when cleaning the underbody, the inside of the wheel housings, etc.
NOTICE
x The water temperature must not be more than +140 °F (+60 °C).
x To help prevent damage to the paint, do not wash the vehicle in direct sunlight.
x Do not use insect sponges, abrasive kitchen sponges or similar things to clean the vehicle. These can damage the paint finish.
x Never clean headlights with a dry cloth or sponge. Always use a wet cloth or sponge. For best results use soapy water.
x When washing or rinsing the vehicle in cold weather, do not let water get into the lock cylinders or point the hose at gaps around the doors, hood, or luggage compartment lid. The water could freeze on the locks and seals and make it difficult to open the vehicle!
x When outside temperatures are low, wipe the rubber seals and their contact surfaces dry to help prevent freezing.
NOTICE
To help prevent vehicle damage in a car wash:
x Compare the vehicle track width with the dimensions of the guide rails in the car wash to help prevent damage to wheel rims and tires!
x Switch off the rain sensor before driving the vehicle through a car wash ⇒  Rain sensor.
x Make sure there is enough clearance for the height and width of the vehicle.
x To help prevent paint damage to the engine hood, place wiper blades against the windshield after they have dried. Do not let them snap back into place.
x Fold the outside mirrors toward the vehicle body.
x Lock the luggage compartment lid to help prevent unintentional opening in the car wash.
Washing with a power washer

sensors and sent to the electronic control unit and make the airbag system deploy in crashes in which it would not deploy if the changes had not been made. Other kinds of changes may reduce the force levels measured by the sensors and prevent the airbag from deploying when it should.
Never install leather upholstery on a vehicle that originally had cloth upholstery. Never install cloth upholstery on a vehicle that originally had leather upholstery. The capacitive passenger detection system for the Advanced Airbag system will not work properly if different upholstery is installed on the passenger seat than the upholstery originally installed on the vehicle when it was originally manufac-tured.
WARNING
Changing the vehicle's suspension including use of unapproved tire-rim combinations can change airbag performance and increase the risk of serious personal injury in a crash.
x Never install suspension components that do not have the same performance characteris-tics as the components originally installed on your vehicle.
x Never use tire-rim combinations that have not been approved by Volkswagen.
WARNING
Leaving the optional safety belt extender attached to the safety belt buckle on the front pas-senger seat when the safety belt is not being used will prevent the Advanced Airbag System from working properly and can increase the risk of serious personal injury in a collision.
x Leaving the extender attached to the safety belt buckle when the front seat is occupied and the safety belt is not being used will signal to the airbag control unit that the front pas-senger seat is occupied and that the safety belt is being used. The electronic control unit for the airbag system will then receive incorrect information that will
– cause the safety belt pretensioner to deploy unnecessarily in collisions and
– cause the front passenger airbag to deploy later in collisions in which the front airbag would otherwise be triggered earlier to help protect an unrestrained front seat passenger.
x Always remove the safety belt extender when it is not needed and stow it safely.
x Never use the safety belt extender to secure a child restraint.
WARNING
Items stored between the safety belt buckle and the center console can cause safety belt buckle to send the wrong information to the airbag control unit and prevent the Advanced Airbag System from working properly.
x Always make sure that nothing can interfere with the safety belt buckles and that they are not obstructed.