VOLVO S90 2020 Quick Guide

STARTING AND DRIVING
389
Related information
Activating and deactivating the parking brake (p. 386)
Parking on a hill (p. 388)
Start battery (p. 567)
Volvo's service program (p. 542)
Auto-hold brakes
With the Auto-hold brake function, the driver can release the brake pedal and the brakeswill remain applied, for example, when thevehicle has stopped at a traffic light or inter-section.
When the vehicle stops, the brakes are acti- vated automatically. The function can useeither the normal brakes or the parking brakesto keep the vehicle stationary and works onflat surfaces or hills. If the driver has their seatbelt fastened or if the driver's door is closed,the brakes will disengage automatically whenthe vehicle starts driving.
NOTE
When braking to a stop on an uphill or downhill gradient, depress the brake pedalwith slightly more force than usual beforereleasing to ensure that the vehicle cannotmove at all.
The parking brake is activated if
the vehicle is switched off
the driver's door is opened
the driver's seat belt is removed
the vehicle has been stationary for a pro- longed period of time (5-10 minutes)
Symbols in the instrument panel
Symbol Meaning
This symbol illuminates when the function is using the normalbrakes to keep the vehicle sta-tionary.
A
B This symbol illuminates when the function is using the parkingbrake to keep the vehicle station-ary.
A
Canadian models.
B US models.
Related information
Activating and deactivating Auto-hold at a standstill (p. 390)
Brakes (p. 383)
Parking brake (p. 385)
Hill Start Assist (p. 390)

STARTING AND DRIVING
390
Activating and deactivating Auto- hold at a standstill
The Auto-hold brake function at a standstill is activated with the button in the tunnel con-sole.
–Press the button in the tunnel console to activate or deactivate the function.
> The indicator light in the button will illu- minate when the function is activated. The function will remain active the nexttime the vehicle is started.
When shutting offIf the function is active and holdingthe vehicle stationary using the nor-mal brakes (A symbol lit in theinstrument panel), the brake pedal
must be depressed while pressing the buttonin order to deactivate Auto-hold.
The function will remain off until it is reac- tivated.
When Auto-hold is switched off, Hill StartAssist (HSA) will remain active to helpprevent the vehicle from rolling backwardwhen starting up a hill.
Related information
Auto-hold brakes (p. 389)
Hill Start Assist
The function for assisting when starting the vehicle on inclines (HSA 4
) helps prevent the
vehicle from rolling backward when starting on an uphill gradient. When backing up a hill,HSA helps prevent the vehicle from rollingforward.
The function retains pressure from the brake pedal in the brake system for several secondsafter the brake pedal has been released. This temporary braking effect is released after a few seconds or when the driver begins driv-ing. Hill Start Assist is available even when the Auto-hold brake function is switched off.
Related information
Auto-hold brakes (p. 389)
Brakes (p. 383)

STARTING AND DRIVING
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* Option/accessory.391
Braking assist after a collision
In a collision in which the activation level is reached for the pyrotechnic seat belt tension-ers or airbags, or if a collision with a large ani-mal is detected, the vehicle's brakes will beautomatically activated. This function isintended to help prevent or reduce the effectsof any subsequent collision.
After a serious collision, it may no longer be possible to control and steer the vehicle. Inorder to avoid or mitigate a possible furthercollision with a vehicle or an object in the vehi-cle's path, the brake assist system is activatedautomatically to help stop the vehicle safely. If braking is not appropriate, e.g. if there is a risk of being hit by passing traffic, the drivercan override the system by depressing theaccelerator pedal. This function assumes that the brake system is intact after a collision.
Related information
Rear Collision Warning
* (p. 326)
BLIS
* (p. 327)
Brake functions (p. 382)
Transmission
The transmission is part of the vehicle's drive- line (power transmission) between the engineand the drive wheels. The function of thetransmission is to change gears dependingon speed and power needs.
The vehicle has an 8-speed automatic trans- mission. The number of gears allows theengine's torque and power band to be effec-tively utilized. Two of the gears are overdrivegears that save fuel when driving at a constantengine speed. Manual shifting is also possible.The instrument panel shows the gear currentlyin use.
Related information
Automatic transmission (p. 391)
Automatic transmission
In vehicles with an automatic transmission, the system selects the gear so that drivingwill be as energy-efficient as possible. Thetransmission also has a manual mode.
The transmission is available in different ver- sions. The gear selector indicates which trans-mission the vehicle has. The various gearselectors have different functions.
Overview of large gear selector and gear shift pattern in the instrument panel
4 Hill Start Assist

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STARTING AND DRIVING
* Option/accessory.
392
Overview of small gear selector and gear shift pat- tern in the instrument panel
The instrument panel shows which gear is cur- rently in use: P , R , N , D or M. For vehicles with the small
gear selector, P position is electric and the
gear shift pattern is instead R, N , D or M.
For manual shifting, the gear indicator in the instrument panel displays the gear currentlybeing used.
CAUTION
Check the operating temperature of the transmission to help avoid damage to anyof the drive system components. If there isa risk of overheating, a warning symbol willappear in the instrument panel and a textmessage will be displayed. Follow the rec-ommendations given.
Symbols in the instrument panelIf a problem should occur with the transmis- sion, a symbol and a message will appear inthe instrument panel.
Symbol Meaning
Information and messages rela- ted to the transmission. Followthe recommendations provided.
Hot or overheated transmission. Follow the recommendationsprovided.
Reduced performance/Accel-
eration performance reduced
In the event of a temporary fault in the driveline, the vehicle maygo into a "limp home" mode withreduced power output to helpavoid damage to the driveline.
Related information
Gear selector positions for automatic transmissions (p. 392)
Using the steering wheel paddles
* to shift
(p. 395)
Shiftlock (p. 397)
The kickdown function (p. 398)
Gear selector positions for automatic transmissions
With an automatic transmission, a suitable gear is selected automatically according tocurrent speed and power requirements.
Selecting gearsThe gear selector is a shift-by-wire selector, where shifting is done electronically instead ofmechanically. This makes shifting easier andthe gear positions more distinct.

STARTING AND DRIVING
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393
Large gear selector and gear selector positions over- view.
For the large gear selector, change gear selec- tor position by pressing the gear selector for-ward or rearward, or to the left for manualshifting.
Small gear selector and gear selector positions over- view.
For the small gear selector, change gear posi- tion by pushing the spring-loaded gear selec-tor forward or rearward, or to the side formanual shifting.
Gear selector positions
Park - P
For the small gear selector, Park is activated using the P button next to the gear selector.
For the large gear selector, Park is activatedby moving the gear selector to position P.
In P mode, the transmission is mechanically
locked. Select P when the vehicle is parked or when
starting the engine. The vehicle must be sta- tionary when Park is selected. To move to another gear from Park, the brakepedal must be depressed and the ignition inmode
II. For vehicles with the small gear
selector, the engine must be running. When parking – apply the parking brake before shifting to Park.
WARNING
Always apply the parking brake when park- ing on an incline. Selecting a gear or put-ting the automatic transmission in P may
not be sufficient to keep the vehicle sta-tionary in all situations.
NOTE
The gear selector must be in position P in
order to lock the vehicle and set the alarm.

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STARTING AND DRIVING
394Help functions
5
For vehicles with the small gear selector, the system will shift to P automatically
if the ignition is switched off while
D or R
is selected.
if the driver unbuckles the seat belt andopens the driver's door while the vehicle isrunning with the gear selector in a gearother than
P.
To park a vehicle with an unbuckled seat beltand open door – end P mode by shifting to R
or D again.
The system will not automatically shift to P if
the ignition is switched off while the gearselector is in the neutral position (N). This is tomake it possible to wash the vehicle in anautomatic car wash in which the vehicle ispulled forward on rolling wheels.
Reverse - R
Select R when backing up. The vehicle must
be stationary when Reverse is selected.
Neutral - N
No gear is selected and the engine can be started. Apply the parking brake if the vehicleis stationary with the gear selector in N.
To move the gear selector from N to another
gear, the brake pedal must be depressed andthe ignition in mode II. For vehicles with the small gear selector, the engine must be run-ning.
D
drive mode
D is the normal driving gear position. The
transmission shifts up or down automatically depending on acceleration and speed. The vehicle must be stationary when the gear selector is moved from R to D.
Manual shifting mode - M
Overview of gear shift pattern in the instrument panel for large gear selector.
Manual shifting mode can be selected at any time during a drive. Engine braking will occurwhen the accelerator pedal is released. Select manual shifting mode by moving the gear selector sideways from D to ±. The cur- rent gear will be displayed in the instrumentpanel.
Push the gear selector forward toward
+
(plus) and release to shift up one gear.
Pull the gear selector backward toward
–
(minus) and release to shift down onegear.
Push the gear selector to the side to theend position at
D to return to D mode.
Overview of gear shift pattern in the instrument panel for small gear selector.
Manual shifting mode can be selected at any time during a drive. Engine braking will occurwhen the accelerator pedal is released. Select manual shifting mode by moving the gear selector rearward from the D position.
5
Does not apply to vehicles with the large gear selector.

STARTING AND DRIVING
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* Option/accessory.395
The currently selected gear will be displayed in the instrument panel.
Push the gear selector to the right toward"
+ " (plus) and release to shift up one gear.
Push the gear selector to the left toward"
– " (minus) and release to shift down one
gear.
Push the gear selector rearward to returnto
D mode.
For smooth shifting and engine performance,the transmission will shift down automaticallyif the vehicle's speed becomes too low for theselected gear.
Related information
Automatic transmission (p. 391)
Shiftlock (p. 397)
Using the steering wheel paddles
* to shift
(p. 395)
The kickdown function (p. 398)
Using the steering wheel paddles
*
to shift
The steering wheel paddles are a supplement to the gear selector and make it possible toshift manually without removing your handsfrom the steering wheel.
" -": Shift down one gear.
" + ": Shift up one gear.
Activating the steering wheel paddlesIn order to shift gears using the paddles, they must first be activated:
–Pull one of the paddles toward the steer- ing wheel.
> A number in the instrument panel indi-
cates the current gear being used.
Instrument panel when shifting gears using steering wheel paddles, large gear selector.
Instrument panel when shifting gears using steering wheel paddles, small gear selector.

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STARTING AND DRIVING
396In shift mode
M, the paddles are automatically
activated.
Instrument panel when the paddles are activated for shifting in manual mode, large gear selector.
Instrument panel when the paddles are activated for shifting in manual mode, small gear selector.
ChangeTo shift one gear:
–Pull one of the paddles toward the steer- ing wheel and then release.
As long as the engine speed (rpm) is withinthe permissible range for the selected gear, agear shift will take place each time a paddle ispulled. After each gear shift, a number indicat-ing the current gear will be displayed in theinstrument panel.
Turning off Start/Stop
Manual deactivation in gear D and M
–Deactivate the paddles by pulling the right paddle ( +) toward the steering wheel and
holding it until the number of the currentgear is no longer displayed in the instru-ment panel.
> The transmission will return to gear selector position D.
On vehicles with the large gear selector, the function can only be switched off in gearselector position D.
Automatic deactivation
In gear position D, the steering wheel paddles
are deactivated after a short period of time if they are not used. The number of the currentgear will no longer be displayed in the instru-ment panel. If engine braking is currentlybeing used, the paddles will remain activeuntil engine braking stops. In gear position
M, the paddles will not acti-
vate automatically.
Related information
Automatic transmission (p. 391)
Gear selector positions for automatictransmissions (p. 392)

STARTING AND DRIVING
397
Shiftlock The automatic transmission's shiftlock func- tion helps prevent inadvertently moving thegear selector between different positions.
There are two types of shiftlocks: mechanical and automatic.
Mechanical shiftlock
Shiftlock for vehicles with large gear selectors.
The gear selector can be moved back and forth between N and D. The other positions
have a shiftlock that is operated using the lockbutton on the gear selector. Press and hold the shiftlock button and move the gear selector forward or backwardbetween P, R , N and D.
Automatic shiftlockThe automatic shiftlock has a separate safetysystem.
From Park - P
To move the gear selector from P to another
gear, the brake pedal must be depressed and the ignition in mode II. For vehicles with the
small gear selector, the engine must be run-ning.
From Neutral - N
If the gear selector is in N and the vehicle has
been stationary for at least 3 seconds (with or without the engine running), the gear selectorwill be locked in that position. To move the gear selector from N to another
gear, the brake pedal must be depressed and the ignition in mode II. For vehicles with the
small gear selector, the engine must be run-ning.
Messages in the instrument panelIf the gear selector is locked in position, amessage will appear in the instrument panel, e.g.
Gear lever Press brake pedal to
activate gear lever.
There is no mechanical shiftlock function. 6
Related information

Automatic transmission (p. 391)
Gear selector positions for automatic transmissions (p. 392)
Deactivating the automatic shiftlock(p. 398)
6
Applies for vehicles with the small gear selector

STARTING AND DRIVING
398
Deactivating the automatic shiftlock7
If the vehicle does not have electrical current, the automatic shiftlock may be disengagedon vehicles equipped with the large gearselector. The shiftlock cannot be disengagedon vehicles equipped with the small gearselector.
Large gear selector overview.
If the vehicle cannot be driven (e.g. due to a discharged battery), the gear selector must bemoved to the N position so that the vehicle
can be moved.
Lift the rubber mat in the storage com- partment in front of the gear selector.Locate the hole with a spring-loaded but-ton in the bottom of the compartment.
Press a small screwdriver or similar object into the hole and hold it down.
Move the gear selector to N and release
the button.
4. Replace the rubber mat.
Overview of small gear selector, where it is not pos- sible to deactivate the shiftlock.
Related information
Shiftlock (p. 397)
Automatic transmission (p. 391)
The kickdown function Kickdown can be used when maximum acceleration is needed, e.g. when passing.
When the accelerator pedal is depressed all the way to the floor (past the normal full accel-erator position), the transmission will auto-matically engage kickdown, i.e. immediatelyshift down to a lower gear. If the accelerator pedal is released from the kickdown position, the transmission will auto-matically shift up again.
Safety function
The transmission control module is equipped with a downshift protection feature to helpprevent the engine from overheating. In some conditions, the transmission will pre- vent downshifting/kickdown if this would leadto such high engine speed (rpm) that theengine could be damaged. If the driver stillattempts downshifting or kickdown at a highrpm, nothing will happen and the original gearwill remain selected. With kickdown, the vehicle can downshift one or more steps at a time depending on theengine speed. The vehicle upshifts when theengine reaches its maximum rpm to preventengine damage.
Related information

Automatic transmission (p. 391)
7
The function is not available for vehicles with the small gear selector.