2017 VOLVO V90 parking brake

DRIVER SUPPORT
* Option/accessory.
376
Parking with Active parking assistance *
The Active parking assistance (Park Assist Pilot - PAP) helps the driver park in three steps. Thefunction can also help the driver to leave a park-ing space.
NOTE
The PAP function measures the space and steers the car - the driver's task is to:
• keep a close watch around the car
• follow the instructions in the centre dis-play
• change gear (reverse/forward)
• control and maintain a safe speed
• brake and stop.
PAP can be activated if the following criteria are met once the engine has been started:
• No trailer is attached to the car.
• Speed must be lower than 30 km/h(20 mph).
NOTE
The distance between the car and parking spaces should be 0.5-1.5 metres while PAPis searching for a parking space.
ParkingThe PAP function parks the car using the follow- ing steps:
1. A parking space is identified and measured.
2. The car is reversed into the space.
3. The car is positioned into the space - the
system may then request that the driver changes gear.
Finding and measuring parking spaces
The function can be activated in the centre display's functionview. It can also be accessed from the camera views.
Principle for parallel parking.
Principle for perpendicular parking.
1. Drive no faster than 30 km/h (20 mph) forparallel parking or 20 km/h (12 mph) for perpendicular parking.
2. Tap on the
Park In button in function view.
> PAP searches for a parking space and checks whether it is big enough.
3. Keep an eye on the centre display - be ready to stop the car when the graphic and mes- sage indicate that a suitable parking spacehas been found.
> A pop-up window is shown.
4. Select
Parallel parking or Perpendicular
parking and select reverse gear.

DRIVER SUPPORT
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* Option/accessory.379
Limitations of Park Assist Pilot *
The Active parking assistance (Park Assist Pilot – PAP) function may have limitations in certainsituations.
Parking is discontinuedA parking sequence will be discontinued:
• if the driver moves the steering wheel
• if the car is driven too quickly - above 7 km/h (4 mph)
• if the driver presses
Cancel in the centre
display
• when the anti-lock brakes or the Electronic stability control are engaged - e.g. when awheel loses grip on a slippery road.
Where applicable, a message in the centre dis-play states the reason for a parking sequencebeing discontinued.
NOTE
Dirt, ice and snow covering the sensors will reduce their function and may prevent meas-urement.
IMPORTANT
Under certain circumstances, PAP is unable to find parking spaces - one reason for thismay be the fact that there is interference withthe sensors from external sound sourceswhich emit the same ultrasound frequenciesas those with which the system works. Examples of such sources include horns, wet tyres on asphalt, pneumatic brakes andexhaust noises from motorcycles etc.
Driver responsibilityThe driver should bear in mind that the PAP is an aid – not an infallible, fully-automatic function.The driver must therefore be prepared to inter-rupt a parking step. There are also a few details to bear in mind while parking, e.g.:
• PAP bases itself on the locations of vehiclesalready parked nearby - if they are inap-propriately parked, your own car's tyres andwheel rims may be damaged by contact withthe kerb.
• PAP is designed for parking on straightstreets - not sharp curves or bends. For thisreason, make sure the car is parallel to theparking space when PAP measures thespace. •
Parking spaces on narrow streets are notalways feasible, since the space required formanoeuvring may not be sufficient.
• Bear in mind that the front of the car mayswing out towards oncoming traffic whilebeing parked.
• Objects situated higher than the detectionareas of the sensors are not taken intoaccount when calculating the parkingmanoeuvre. This may cause PAP to turn intothe parking space too early, and hence suchparking spaces should be avoided.
• The driver is responsible for determiningwhether the space selected by PAP is suita-ble for parking.
• Use approved tyres 28
with the correct tyre
pressure - this affects the ability of PAP topark the car.
• Heavy rain or snow may cause the system tomeasure the parking space incorrectly.
• Do not use PAP if snow chains or a sparewheel are fitted.
• Do not use PAP if cargo items are protrudingfrom the car.
• Perpendicular parking spaces may be missedor offered unnecessarily if one parked car isprotruding more than other parked cars.
28
"Approved tyres" refers to tyres of the same type and make as those fitted new on delivery from the factory.

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STARTING AND DRIVING
* Option/accessory.
390
Symbol Specification
Information or error message for gearbox. Follow the recommenda-tion given.
Hot or overheated gearbox. Follow the recommendation given.
Related information
•Gear positions for automatic gearbox (p. 390)
• Manual gearbox (p. 392)
• Gear shift indicator
* (p. 392)
Gear positions for automatic gearbox
With an automatic gearbox, the system chooses the gear so that driving is optimal. The gearboxalso has a manual gearshift mode.
Gear positions in the driver display
The driver display shows the gear selector's posi- tion:
P, R, N, D or M.
In manual gearshift mode, the gear being used is also shown.
Gear positions
Park position - P
Select the P position when the car is parked or
when starting the engine. The car must be sta- tionary when the park position is selected. To be able to move the gear selector from thepark position, the brake pedal must be depressed and the ignition position must be
II.
The gearbox is mechanically blocked when the P
position is engaged. Apply the parking brake first when the car is parked.
WARNING
Always use the parking brake when parking on an inclined surface. Engaging a gear or the automatic transmission's P position is not suf-
ficient to hold the car stationary in all situa- tions.
NOTE
The gear selector must be in P position to
allow the car to be locked and alarmed.
Reverse position - R
Select position R to reverse. The car must be sta-
tionary when reverse position is selected.
Neutral position - N
No gear is engaged and the engine can be started. Apply the parking brake if the car is sta- tionary with the gear selector in N position.
To be able to change from the neutral position to another gear position, the brake pedal must be depressed and the ignition position must be II.

STARTING AND DRIVING
* Option/accessory.
392
Manual gearbox
With a manual gearbox, the driver selects a suit- able gear manually, according to speed andpower requirements at the time.
Changing gearThe manual gearbox has six gears, the shifting pattern is imprinted on the gear lever.
Gearing pattern.
• Depress the clutch pedal fully during each gear change.
• Take your foot off the clutch pedal betweengear changes.
Reverse gear inhibitorThe reverse gear inhibitor hinders the possibilityof mistakenly attempting to engage reverse gearduring normal forward travel. •
Follow the gearing pattern printed on the gear lever and start from neutral position,
N
before moving it to R position.
• Engage reverse gear only when the car is stationary.
During parking
WARNING
Always apply the parking brake when parking on a slope - leaving the car in gear is not suf-ficient to hold the car in all situations.
Related information
• Gearbox (p. 389)
• Gear shift indicator
* (p. 392)
Gear shift indicator *
The gear shift indicator in the driver display shows the current gear during manual gearshift-ing and when it is appropriate to engage thenext gear for optimum fuel economy.
For eco-driving during manual gear changing, it is important to drive in the right gear and to changegear in good time.

STARTING AND DRIVING
406
Brake functions
The car's brakes are used to reduce the speed or prevent the car from rolling.
Besides the foot brake and parking brake, the car is equipped with several automatic brake assistfunctions. These can assist the driver by notneeding to keep his/her foot on the brake pedalwhen stationary at a traffic light, when starting onan uphill gradient or when driving on a downhillgradient. Depending on the car's equipment, the following auto braking functions are available:
• Automatic braking when stationary (AutoHold)
• Hill start assist (Hill Start Assist)
• Auto braking after a collision
• City Safety
Related information
•
Foot brake (p. 406)
• Parking brake (p. 409)
• Hill start assist (p. 412)
• Automatic braking when stationary (p. 412)
• Auto braking after a collision (p. 408)
Foot brake
The foot brake is used to reduce the car's speed while driving.
Foot brake systemThe car is equipped with two brake circuits. If a brake circuit is damaged, the brake pedal willengage deeper. Higher pressure on the pedal willtherefore be needed to produce the normal brak-ing effect. The driver's brake pedal pressure is assisted by a brake servo.
WARNING
The brake servo only works when the engine is running.
If the foot brake is used when the engine is switched off then the pedal will feel stiff and ahigher pedal pressure must be used to brake thecar. In very hilly terrain or when driving with a heavy load the brakes can be relieved by using enginebraking in manual gearshift mode. Engine brakingis most efficiently used if the same gear is useddownhill as up.
Anti-lock braking systemThe car has anti-lock brakes, Anti-lock BrakingSystem (ABS), which prevent the wheels fromlocking while braking and allows maintained steering control. Vibration may be felt in thebrake pedal when this is engaged and this is nor-mal. A short test of the ABS system is made automat- ically after the engine has been started when thedriver releases the brake pedal. A further auto-matic test of the system may be made at lowspeed. The test may be experienced as pulses inthe brake pedal.
Braking on wet roadsWhen driving for a prolonged period of time inheavy rain without braking, the braking effect maybe delayed slightly when next using the brakes.This may also be the case after a car wash. It isthen necessary to depress the brake pedal moreforcefully. You should therefore maintain agreater distance to the vehicles in front. Brake the car firmly after driving on wet roads or using a car wash. This warms up the brake discs,enabling them to dry faster and protecting themagainst corrosion. Bear in mind the current trafficsituation when braking.
Braking on salted roadsWhen driving on salted roads, a layer of salt mayform on the brake discs and brake linings. Thismay extend braking distance. You should there-fore maintain an extra large safety distance tovehicles in front. In addition, make sure you dothe following:

STARTING AND DRIVING
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Emergency brake lightsEmergency brake lights are activated to alert vehicles behind about heavy braking. The func-tion means that the brake light flashes instead of- as in normal braking - shining with a constantglow.
The emergency brake lights are activated during heavy braking or if the ABS system is activated athigh speeds. After emergency braking to a lowspeed, the brake lights return from flashing to thenormal constant glow. The car's hazard warningflashers are activated at the same time. Theseflash until the driver accelerates the car to ahigher speed again or switches off the hazardwarning flashers.
Related information
• Foot brake (p. 406)
• Hazard warning flashers (p. 143)
• Brake lights (p. 143)
Brake assistance
The brake assist system, BAS (Brake Assist System), helps to increase brake force duringbraking, thereby shortening the braking distance.
The system detects the way in which the driver brakes and increases brake force where neces-sary. The brake force can be boosted up to thelevel when the ABS system is engaged. Thefunction is suspended when the pressure on thebrake pedal decreases.
NOTE
When BAS is activated the brake pedal low- ers slightly more than usual, depress (hold)the brake pedal as long as necessary. When the brake pedal is released, all braking ceases.
Related information
• Foot brake (p. 406)
Auto braking after a collision In the event of a collision in which the activation level is reached for the pyrotechnic seatbelt ten-sioners or airbags, or if a collision with a largeanimal is detected, the car's brakes are automat-ically applied. This function is to prevent orreduce the effects of any subsequent collision.
After a serious collision there is a risk that it is no longer possible to control and steer the car. Inorder to avoid or mitigate a possible further colli-sion with a vehicle or an object in the vehicle'spath, the auto braking system is activated auto-matically and brakes the car in a safe manner. Brake lights and hazard warning lights are acti- vated during braking. When the car has stopped,the hazard warning lights continue to flash andthe parking brake is applied. If braking is not appropriate, e.g. if there is a risk of being hit by following traffic, the system can beoverridden by the driver depressing the accelera-tor pedal. The function assumes that the brake system is intact after the collision. See also the sections "Rear Collision Warning" and "Blind Spot Information".
Related information
• Brake functions (p. 406)
• Seatbelt tensioner (p. 59)
• Airbags (p. 63)

STARTING AND DRIVING
* Option/accessory.409
•
Rear Collision Warning (p. 340)
• Blind Spot Information
* (p. 340)
Parking brake The parking brake prevents the car from rolling away from stationary by means of mechanicallylocking/blocking two wheels.
The control for the parking brake is located in the tunnel console between the seats.
A faint electric motor noise can be heard when the electrically-operated parking brake is beingapplied. The noise can also be heard during theautomatic function checking of the parking brake. If the car is stationary when the parking brake is applied then it only acts on the rear wheels. If it isapplied when the car is moving then the normalfoot brake is used, i.e. the brake acts on all fourwheels. Brake function changes over to the rearwheels when the car is almost stationary.
Related information
• Brake functions (p. 406)
• Using the parking brake (p. 410)
• In the event of a fault in the parking brake(p. 411)

STARTING AND DRIVING
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Using the parking brake
Use the parking brake to prevent the car from rolling from stationary.
Applying the parking brake
1. Pull the control upward.
> The symbol in the driver display illumi-nates when the parking brake is applied.
2. Check that the car is stationary.
Symbol in the driver display
Symbol Specification
The symbol is illuminated when the parking brake is applied. If the symbol flashes, it indicates a fault has occurred. Read the mes-sage on the driver display.
Automatic application
The parking brake is applied automatically:
• if the Auto Hold function (automatic braking when stationary) is activated and the car hasbeen stationary approx. 5 minutes.
• when gear position
P is selected on a steep
hill 12
.
• when the car has been switched off.
Emergency brake
In an emergency, the parking brake can be applied when the car is in motion by pulling andholding up the control. Braking stops when thecontrol is released.
NOTE
An acoustic signal sounds while emergency braking is active at high speeds.
Releasing the parking brake
Releasing manually
1. Depress the brake pedal firmly.
2. Press the control down.
> The parking brake releases and the sym-bol in the driver display extinguishes.
12Applies to automatic gearbox.