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206may not be detected. Normally, the license plate and taillight reflectors give the rear section of avehicle ahead sufficient reflective surfaces to bedetected.
NOTE
•
Keep the windshield in front of the laser sensor free of ice, snow, dirt, etc., see CitySafety – function (p. 204).
• Snow or ice on the hood deeper than2 inches (5 cm) may obstruct the sensor.Keep the hood free of ice and snow.
• Do not mount or in any way attach any-thing on the windshield that couldobstruct the laser sensor.
Related information
• City Safety – introduction (p. 203)
• City Safety – function (p. 204)
• City Safety – operation (p. 205)
• City Safety – troubleshooting (p. 206)
• City Safety – symbols and messages (p. 208)
• City Safety – Laser sensor (p. 209)
City Safety – troubleshooting
TroubleshootingIf 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. Forthis reason, the driver must ensure that the areaof the windshield in front of the sensor is alwayskept clean. The following table shows some of the situations that can cause the message to be displayed andsuggested actions.
CauseAction
The area of the windshield in front of the sensor isdirty or covered by ice orsnow.Clean the wind- shield or removethe ice/snow.
The laser sensor's field of view is obstructed.Remove the obstruction.
NOTE
If a crack, scratch or stone chip should occur in the section of the windshield in front thelaser sensor, contact a trained and qualifiedVolvo service technician to repair or replacethe windshield (see the illustration showingthe location of the sensor in City Safety –function (p. 204)). Failing to do so may result in reduced City Safety ™ functionality.
To help prevent limited or reduced functional- ity, please also observe the following:
• Volvo recommends that cracks, scratchesor stone chips on the windshield in front of the laser sensor 
should not be
repaired; in such cases, the entire wind- shield should be replaced.
• Before the windshield is replaced, con-tact a Volvo retailer to ensure that thecorrect windshield is ordered and instal-led. If the wrong type of windshield is used, this may cause City Safety
™ to
function improperly or not at all. Volvo recommends the use of only GenuineVolvo Replacement Windshields.
• When replacing windshield wipers, usethe same type or ones approved by Volvo.
Related information
• City Safety – introduction (p. 203)
• City Safety – function (p. 204) 

DRIVER SUPPORT
210•
City Safety – troubleshooting (p. 206)
• City Safety – symbols and messages (p. 208)
Collision warning – introduction Pedestrian and Cyclist Detection with Full Auto Brake is designed to assist the driver if there is arisk of a collision with a pedestrian, a cyclist, avehicle ahead that is at a standstill or one that ismoving in the same direction as your vehicle.
This system consists of the following three func- tions:
• Collision Warning
 warns the driver of a
potential collision situation.
• Brake Support
 helps the driver brake effi-
ciently in a critical situation.
• Auto-brake
 brakes the vehicle automatically
if a collision with a pedestrian, a cyclist oranother vehicle cannot be avoided and thedriver does not apply the brakes in time orsteer around the person/vehicle. Auto-brakecan help prevent a collision or reduce thespeed at which a collision occurs.
Since Pedestrian and Cyclist Detection with FullAuto Brake is activated in circumstances wherethe driver should have begun braking muchsooner, the system will not be able to assist thedriver in all situations. This system is designed to activate as late as possible to help avoid unnecessary intervention. The system should not be used in such a way that the driver changes his/her way of operatingthe vehicle. If the driver relies entirely on the sys- tem, the chances of an accident eventually occur-ring increase considerably. The Pedestrian and Cyclist Detection with Full Auto Brake and City Safety
™ systems supple-
ment each other. See City Safety – introduction (p. 203) for detailed information about City Safety ™.
WARNING
No automatic system can be guaranteed to function 100% correctly in all situations. Forthat reason, never test the Auto-brake systemby driving toward a person or object. Thiscould result in serious injury or death. 

DRIVER SUPPORT
}}
* Option/accessory, for more information, see Introduction.215
•
The camera's function is deactivated and will not detect a cyclist in darkness or in tunnels,even if there is street lighting in the area.
• For optimal cyclist detection, City Safety
™
must be activated.
WARNING
Pedestrian and Cyclist Detection with Full Auto Brake is designed to be a supplemen-tary driving aid. It is not, however, intended toreplace the driver's attention and judgement.The driver is always responsible for operatingthe vehicle in a safe manner. The system cannot detect a bike/cyclist if:
• He/she is wearing loose-fitting clothing that may obscure body contours
• The bike is approaching your vehicle fromthe side
• The bike is not equipped with a rear-fac-ing red reflector
• The bike is carrying large objects
• Most of the cyclist's body or the bikeitself cannot be "seen" by the system'scamera
Related information
•Collision warning – introduction (p. 210)
• Collision warning
* – function (p. 212)
• Collision warning
* – operation (p. 213) •
Collision warning
* – Pedestrian detection
(p. 215)
• Collision warning
* – limitations (p. 216)
• Collision warning – troubleshooting (p. 219)
• Collision warning – symbols and messages (p. 221)
Collision warning
* – Pedestrian
detection
The system cannot identify all pedestrians
The Pedestrian and Cyclist Detection with Full Auto Brake system can only identify and detect apedestrian who is standing upright. This personcan be standing still, walking or running. This means that the system has to be able to identify a person's head, arms, shoulders, legs,the upper and lower parts of the body and a per-son's pattern of movement when walking or run-ning. If parts of the body are not visible to the camera, the system cannot detect the pedestrian. The following conditions apply:
• In order to detect a pedestrian, the system must have a full view of the person's entire 

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237
Park assist – troubleshooting
Faults in the systemIf the information symbol illuminates and Park
assist syst Service required is shown on the
information display, this indicates that the system is not functioning properly and has been disen-gaged. Consult a trained and qualified Volvo serv-ice technician.
CAUTION
In certain circumstances, the park assist sys- tem may give unexpected warning signalsthat can be caused by external sound sourcesthat use the same ultrasound frequencies asthe system. This may include such things asthe horns of other vehicles, wet tires onasphalt, pneumatic brakes, motorcycleexhaust pipes, etc. This does not indicate afault in the system.
Related information
• Park assist – introduction (p. 233)
• Park assist – limitations (p. 236)
• Park assist – function (p. 233)
• Park assist – operation (p. 235)
• Rear Park Assist Camera (PAC) – function (p. 238)
Rear Park Assist Camera (PAC) – introduction
The Park Assist Camera is designed to provide the driver with a view of the area behind the vehi-cle when backing up.
IntroductionPAC uses the display in the center console to show the area behind the car while you are back-ing up. PAC also shows guiding lines in the on-screen image to indicate the direction that the vehiclewill take as it moves rearward, which helps sim-plify parallel parking, backing into a tight space orwhen attaching a trailer to the vehicle. The images of vehicles in this section are generic and may not depict your specific model.
NOTE
A trailer hitch whose wiring is integrated with the vehicle's electrical system will be takeninto account when measuring the availablespace behind the vehicle.
WARNING
• PAC is designed to be a supplementary aid when parking the vehicle. It is not,however, intended to replace the driver

STARTING AND DRIVING
* Option/accessory, for more information, see Introduction.
264
Brakes – general The brake system is a hydraulic system consist- ing of two separate brake circuits. If a problemshould occur in one of these circuits, it is stillpossible to stop the vehicle with the other brakecircuit.
If the brake pedal must be depressed farther than normal and requires greater foot pressure,the stopping distance will be longer. A warning light in the instrument panel will light up to warn the driver that a fault has occurred. If this light comes on while driving or braking, stop immediately and check the brake fluid levelin the reservoir.
NOTE
Press the brake pedal hard and maintain pressure on the pedal – do not pump thebrakes.
WARNING
If the fluid level is below the  MIN mark in the
reservoir or if a brake system message is shown in the information display:  DO NOT
DRIVE . Have the vehicle towed to a trained
and qualified Volvo service technician and have the brake system inspected.
Brake pad inspection
On vehicles equipped with a jack *, the condition
of the brake pads can be checked by raising the vehicle (see Changing a wheel – removing wheel(p. 291) for information about using the jack andremoving a wheel) and performing a visualinspection of the brake pads.
WARNING
• If the vehicle has been driven immediately prior to a brake pad inspection, the wheelhub, brake components, etc., will be veryhot. Allow time for these components tocool before carrying out the inspection.
• Apply the parking brake and put the gear selector in the Park (
P) position.
• Block the wheels standing on the ground, use rigid wooden blocks or large stones.
WARNING
• Use the jack intended for the vehicle when changing a tire. For any other job,use stands to support the vehicle.
• The jack should be kept well-greased andclean, and should not be damaged.
• Be sure the jack is on a firm, level, non-slippery surface.
• No objects should be placed between thebase of jack and the ground, or betweenthe jack and the attachment bar on thevehicle.
• The jack must correctly engage the jackattachment.
• Never allow any part of your body to beextended under a vehicle supported by ajack.
Power brakes function only when the engine is running
The power brakes utilize vacuum pressure which is only created when the engine is running. Neverlet the vehicle roll to a stop with the engineswitched off. If the power brakes are not working, considerably higher pressure will be required on the brakepedal to compensate for the lack of power assis-tance. This can happen for example when towingyour vehicle or if the engine is switched off whenthe vehicle is rolling. The brake pedal feels harderthan usual. 

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272
Conserving electrical current
Keep the following in mind to help minimize bat- tery drain:
• When the engine is not running, avoid using ignition mode 
II. Many electrical systems (the
audio system, the optional navigation system, power windows, etc) will function in ignition modes  0 and  I. These modes reduce drain
on the battery.
• Please keep in mind that using systems, accessories, etc., that consume a great dealof current when the engine is not runningcould result in the battery being completelydrained. Driving or having the engine runningfor approximately 15 minutes will help keepthe battery charged.
• The optional 12-volt socket in the cargoarea (p. 143) area provides electrical currenteven with the ignition switched off, whichdrains the battery.
Before a long distance trip
It is always worthwhile to have your vehicle checked by a trained and qualified Volvo servicetechnician before driving long distances. Yourretailer will also be able to supply you with bulbs,fuses, spark plugs and wiper blades for your usein the event that problems occur.
As a minimum, the following items should be checked before any long trip:
• Check that engine runs smoothly and thatfuel consumption is normal.
• Check for fuel, oil, and fluid leakage.
• Have the transmission oil level checked.
• Check condition of drive belts.
• Check state of the battery's charge.
• Examine tires carefully (the spare tire aswell), and replace those that areworn (p. 290). Check tire pressure (p. 297).
• The brakes, front wheel alignment, and steer-ing gear should be checked by a trained andqualified Volvo service technician only.
• Check all lights, including high beams.
• Reflective warning triangles are legallyrequired in some states/provinces.
• Have a word with a trained and qualifiedVolvo service technician if you intend to drivein countries where it may be difficult toobtain the correct fuel. •
Consider your destination. If you will be driv-ing through an area where snow or ice arelikely to occur, consider snow tires (p. 303).
Related information
•
Changing a wheel – removing wheel (p. 291)
• Bulbs – introduction (p. 334) 

STARTING AND DRIVING
}}
273
Driving in cold weather
Check your vehicle before the approach of cold weather.
The following advice is worth noting:
• Make sure that the engine coolant (p. 331) contains 50 percent antifreeze. Any othermixture will reduce freeze protection. Thisgives protection against freezing down to–31 °F (–35 °C). The use of "recycled" anti-freeze is not approved by Volvo. Differenttypes of antifreeze must not be mixed.
• Volvo recommends using only genuine Volvoantifreeze in your vehicle's radiator.
• Try to keep the fuel tank well filled – thishelps prevent the formation of condensationin the tank. In addition, in extremely coldweather conditions it is worthwhile to addfuel line de-icer before refueling.
• The viscosity of the engine oil is important.Oil with low viscosity (thinner oil) improvescold-weather starting as well as decreasingfuel consumption while the engine is warm-ing up. Full synthetic 0W-30 oil is recom-mended for driving in areas with sustainedlow temperatures.
• The load placed on the battery is greater dur-ing the winter since the windshield wipers,lighting, etc., are used more often. Moreover,the capacity of the battery decreases as thetemperature drops. In very cold weather, apoorly charged battery can freeze and be damaged. It is therefore advisable to checkthe state of charge more frequently andspray an anti-rust oil on the battery posts.
• Volvo recommends the use of snow tires onall four wheels for winter driving, see Snowtires/studded tires (p. 303).
• To prevent the washer fluid (p. 344)reservoirfrom freezing, add washer solvents contain-ing antifreeze. This is important since dirt isoften splashed on the windshield during win-ter driving, requiring the frequent use of thewashers and wipers. Volvo Washer Solventshould be diluted as follows: Down to 14 °F(–10 °C): 1 part washer solvent and 4 partswater Down to 5 °F (–15  °C): 1 part washersolvent and 3 parts water Down to 0 °F(–18 °C): 1 part washer solvent and 2 partswater Down to –18 °F (–28 °C): 1 partwasher solvent and 1 part water.
• Use Volvo Teflon Lock Spray in the locks.
• Avoid using de-icing sprays as they cancause damage to the locks.
Refueling – fuel requirements
Volvo recommends the use of detergent gaso- line to control engine deposits.
Deposit control gasoline (detergent
additives)
Detergent gasoline is effective in keeping injec- tors and intake valves clean. Consistent use ofdeposit control gasolines will help ensure gooddrivability and fuel economy. If you are not surewhether the gasoline contains deposit controladditives, check with the service station operator.
NOTE
Volvo does not recommend the use of exter- nal fuel injector cleaning systems.
Unleaded fuelEach Volvo has a three-way catalytic converter and must use only unleaded gasoline. U.S. andCanadian regulations require that pumps deliver-ing unleaded gasoline be labeled "UNLEADED".Only these pumps have nozzles which fit yourvehicle's filler inlet. It is unlawful to dispense lea-ded fuel into a vehicle labeled "unleaded gaso-line only". Leaded gasoline damages the three-way catalytic converter and the heated oxygensensor system. Repeated use of leaded gasolinewill lessen the effectiveness of the emission con-trol system (p. 277) and could result in loss ofemission warranty coverage. State and local vehi- 

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STARTING AND DRIVING
278nents, altering emission system components or location or removing components, and/orrepeated use of leaded fuel.
NOTE
Unleaded fuel is required for vehicles with three-way catalytic converters.
Heated oxygen sensorsThe heated oxygen sensors monitor the oxygen content of the exhaust gases. Readings are fedinto a control module that continuously monitorsengine functions and controls fuel injection. Theratio of fuel to air into the engine is continuouslyadjusted for efficient combustion to help reduceharmful emissions.
Related information
•
Information displays – warning symbols(p. 75)
• Engine and cooling system (p. 271)
Economical driving
Better driving economy may be obtained by thinking ahead, avoiding rapid starts and stopsand adjusting the speed of your vehicle to imme-diate traffic conditions.
Economical driving conserves natural
resources
Observe the following rules: • Bring the engine to normal operating tem- perature as soon as possible by driving witha light foot on the accelerator pedal for thefirst few minutes of operation. A cold engineuses more fuel and is subject to increasedwear.
• Whenever possible, avoid using the vehiclefor driving short distances. This does notallow the engine to reach normal operatingtemperature.
• Drive carefully and avoid rapid accelerationand hard braking.
• Use the transmission's Drive (
D) position as
often as possible and avoid using kick-down.
• Using the transmission's Sport mode mayincrease fuel consumption somewhat. Use the transmission's Drive (
D) position as often
as possible. For additional information about Sport mode, see Transmission – Geartronic(p. 254).
• Do not exceed posted speed limits. •
Avoid carrying unnecessary items (extra load)in the vehicle.
• Maintain correct tire pressure. Check tirepressure regularly (when tires are cold).
• Remove snow tires when threat of snow orice has ended.
• Note that roof racks, ski racks, etc, increaseair resistance and also fuel consumption.
• At highway driving speeds, fuel consumptionwill be lower with the air conditioning on andthe windows closed than with the air condi-tioning off and the windows open.
• Using the onboard trip computer's fuel con-sumption modes can help you learn how todrive more economically.
Other factors that decrease gas mileage are:
• Dirty air cleaner
• Dirty engine oil and clogged oil filter
• Dragging brakes
• Incorrect front end alignment
Some of the above mentioned items and othersare checked at the standard maintenance inter-vals.