2018 VOLVO S90 automatic transmission

||
STARTING AND DRIVING
* Option/accessory.
408
SymbolMeaning
Information and messages related to the transmission. Follow the rec-ommendations provided.
Hot or overheated transmission. Follow the recommendations provi-ded.
Reduced performance/Acceler-
ation performance reduced
In the event of a temporary fault in the driveline, the vehicle may gointo a "limp home" mode withreduced power output to help avoiddamage to the driveline.
Related information
• Gear selector positions for automatic trans- missions (p. 408)
• Gear indicator
* (p. 412)
Gear selector positions forautomatic transmissions In vehicles with an automatic transmission, the system selects the optimal gear for the currentdriving conditions. The transmission also has amanual mode.
The instrument panel shows which gear is cur- rently in use:
P, R, N, D or M.
In manual gear mode, the gear indicator in the instrument panel displays the gear currentlybeing used.
Gear selector positions
Park - P
In P mode, the transmission is mechanically
locked. Select
P when the vehicle is parked or when star-
ting the engine. The vehicle must be stationary when Park is selected. To move the gear selector from Park, the brake pedal must be depressed and the ignition in mode II.
When parking – apply the parking brake before shifting to Park.
WARNING
Always apply the parking brake when parking on an incline. Selecting a gear or putting the automatic transmission in P may not be suffi-
cient to keep the vehicle stationary in all sit- uations.
NOTE
The gear selector must be in the P position
before the vehicle can be locked and the alarm set.
Reverse - R
Select R when backing up. The vehicle must be
stationary when Reverse is selected.

STARTING AND DRIVING
}}
* Option/accessory.409
Neutral - N
No gear is selected and the engine can be started. Apply the parking brake if the vehicle is stationary with the gear selector in N.
To move the gear selector from Neutral to another gear, the brake pedal must be depressed and the ignition in mode II.
D drive mode
D is the normal driving gear position. The trans-
mission shifts up or down automatically depend- ing on acceleration and speed. The vehicle mustbe stationary when the gear selector is moved from R to D.
Manual shifting mode - M
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 current gear
will be displayed in the instrument panel.
• 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 one gear.
Manual shifting mode in the instrument panel 2
.
For smooth shifting and engine performance, the transmission will shift down automatically if thevehicle's speed becomes too low for the selectedgear. Move the gear selector sideways to D at any time
to return to automatic shifting.
Related information
• Shiftlock (p. 411)
• Using the steering wheel paddles
* to shift
(p. 409)
• The kickdown function (p. 412)
• Gear indicator
* (p. 412)
Using the steering wheel paddles *to shift
The steering wheel paddles are a supplement to the gear selector and make it possible to shiftmanually without removing your hands from thesteering wheel.
Activating the steering wheel paddlesIn order to shift gears using the paddles, they must first be activated:
–Pull one of the paddles toward the steering wheel.
> A number in the instrument panel indi- cates the current gear being used.
Instrument panel when the paddles are activated for shifting.
2The illustration is generic - details may vary according to vehicle model.

STARTING AND DRIVING
}}
411
Shiftlock The automatic transmission's shiftlock function helps prevent inadvertently moving the gearselector between different positions.
There are two types of shiftlocks: mechanical and automatic.
Mechanical shiftlock
The gear selector can be moved back and forth between N and D. The other positions have a
shiftlock that is operated using the lock button on the gear selector. Press and hold the shiftlock button and move the gear selector forward or backward between P, R ,
N and D.
Automatic shiftlockThe automatic shiftlock has a separate safety system.
From Park - P
To move the gear selector from the P position,
the brake pedal must be depressed and the igni- tion in mode II.
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 selector willbe 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.
Related information
• Gear selector positions for automatic trans- missions (p. 408)
• Deactivating the automatic shiftlock (p. 411)
Deactivating the automatic shiftlock
The automatic shiftlock can still be disengaged even when there is no electrical current to thevehicle.
Deactivating the automatic shiftlock
If the vehicle cannot be driven (e.g. due to a dis- charged battery), the gear selector must be moved to the N position so that the vehicle can
be moved.
Lift the rubber mat in the storage compart- ment in front of the gear selector. Locate thehole with a spring-loaded button in the bot-tom 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.

||
STARTING AND DRIVING
* Option/accessory.
412
Related information
• Shiftlock (p. 411)
• Gear selector positions for automatic trans- missions (p. 408)
The kickdown function
Kickdown is 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 acceleratorposition), the transmission will automaticallyengage kickdown, i.e. immediately shift down to alower gear. If the accelerator pedal is released from the kick- down position, the transmission will automaticallyshift up again.
Safety function
The transmission control module is equipped with a downshift protection feature to help prevent theengine from overheating. In some conditions, the transmission will prevent downshifting/kickdown if this would lead to suchhigh engine speed (rpm) that the engine couldbe damaged. If the driver still attempts downshift-ing or kickdown at a high rpm, nothing will hap-pen and the original gear will remain selected. With kickdown, the vehicle can downshift one or more steps at a time depending on the enginespeed. The vehicle upshifts when the engine rea-ches its maximum rpm to prevent engine dam-age.
Related information
• Gear selector positions for automatic trans-missions (p. 408)
Gear indicator
*
The gear indicator in the instrument panel shows the gear currently being used for manual shiftingand indicates when another gear should beselected to optimize fuel economy.
For eco-friendly driving when manually shifting, it is important to use the correct gear and to shiftgears in good time. The gear indicator in the instrument panel shows the gear currently being used and indicates withan upward-facing arrow if a higher gear shouldbe selected.
Gear indicator in 12" instrument panel *.

STARTING AND DRIVING
}}
* Option/accessory.413
Gear indicator in 8" instrument panel.
Related information
•Gear selector positions for automatic trans- missions (p. 408)
All Wheel Drive (AWD)
*
All-wheel drive, All Wheel Drive (AWD), also called four-wheel drive, means that power is dis-tributed to all four wheels, which improves trac-tion.
To achieve the best traction, power is automati- cally directed to the wheels that have the bestgrip. The system continuously calculates theneed for torque to the rear wheels, and canimmediately redistribute up to half of the engine'storque to the rear wheels. All-wheel drive also has a stabilizing effect at higher speeds. In normal driving conditions, mostof the engine's power is directed to the frontwheels. When the vehicle is stationary, all-wheeldrive is always activated in preparation for maxi-mum traction during acceleration. All-wheel drive reacts differently depending on which drive mode * is selected.
Related information
• Drive modes
* (p. 413)
• Transmission (p. 407)
Drive modes
*
Drive modes affect the vehicle's driving charac- teristics in different ways to enhance and sim-plify the driving experience in certain types of sit-uations.
Drive modes enable easy access to the vehicle's many functions and settings in different drivingsituations. The following systems are adapted tohelp optimize driving characteristics in each drivemode: • Steering
• Engine/transmission/all-wheel drive
*
• Brakes
• Shock absorbers
• Instrument panel
• Start/Stop function
• Climate control settings
Select the drive mode that is best suited to the current driving conditions. Keep in mind that notall drive modes are available in all situations.
Available drive modes
COMFORT
• This is the vehicle's default mode.
When the engine is started, the vehicle will be in Comfort mode and the Start/Stop function will beactivated. This setting offers driving comfort, lightsteering and soft suspension.

STARTING AND DRIVING
}}
* Option/accessory.415
Changing drive mode *
The drive mode is changed using the control in the tunnel console.
Select the drive mode that is best suited to the current driving conditions. Keep in mind that notall drive modes are available in all situations. To change drive mode:
1. Press the DRIVE MODE control.
> A pop-up menu will appear in the center display.
2. Roll the wheel upward or downward to the desired drive mode.
3. Press the drive mode control or tap its button in the center display to confirm the selection.
> The selected drive mode is shown in theinstrument panel. If a drive mode is grayed out in the pop-up menu, it cannot be selected.
Related information
•
Drive modes
* (p. 413)
• Activating and deactivating ECO drive modeusing the function button (p. 417)
ECO drive mode
The Eco drive mode optimizes the vehicle's driv- ing characteristics for more fuel-efficient andeco-friendly driving.
Use this mode to save fuel and promote eco- friendly driving. When ECO mode is activated, the following cha- racteristics are modified:
• The automatic transmission's shifting points.
• Engine control and accelerator pedalresponse.
• Eco Coast functionality is activated andengine braking is disabled when the acceler-ator pedal is released at speeds between65 and 140 km/h (40 and 87 mph).
• Some of the climate system settings will bereduced or switched off.
• Information will be shown in the ECO gaugein the instrument panel to help promotemore eco-friendly and economical driving.
Coast function Eco CoastEco Coast essentially deactivates engine braking,allowing the vehicle's kinetic energy to be used to roll greater distances. When the driver releases the accelerator pedal, the transmission is auto- matically disengaged from the engine. Enginespeed is reduced to idling speed to reduce fuelconsumption.

||
STARTING AND DRIVING
434
WARNING
•Batteries generate hydrogen gas, which is flammable and explosive.
• Do not connect the jumper cable to anypart of the fuel system or to any movingparts. Avoid touching hot manifolds.
• Battery fluid contains sulfuric acid. Do notallow battery fluid to contact eyes, skin,fabrics or painted surfaces.
• If contact occurs, flush the affected areaimmediately with water. Obtain medicalhelp immediately if eyes are affected.
• Never expose the battery to open flameor electric spark. Do not smoke near thebattery. Failure to follow the instructionsfor jump starting can lead to injury.
Related information
• Starting the vehicle (p. 394)
• Ignition modes (p. 397)
• Adjusting the steering wheel (p. 193)
• Selecting ignition mode (p. 398)
Towing using a towline
This section refers to one vehicle being towed behind another using a towline.
Before towing another vehicle, check applicable speed limit regulations.
Preparations and towing
CAUTION
Note that the vehicle must always be towed with the wheels rolling forward.
• Do not tow a vehicle with automatictransmission at a speed greater than80 km/h (50 mph) or for a distancegreater than 80 km (50 miles).
WARNING
•
Ignition mode
II must be active – all air-
bags are deactivated in ignition mode I.
• Always have the remote key in the vehicle when it is towed.
WARNING
The brake and steering servos do not work when the engine is off – it takesabout 5 times more pressure on the brakepedal and steering requires much more effortthan normal. 1. Turn on the hazard warning flashers.
2. Attach the towline to the towing eyelet.3.
Put the vehicle in ignition mode II – without
pressing the brake pedal, turn the start knob clockwise and hold it there for about4 seconds. Release the knob, which willautomatically return to its original position.
4. Move the gear selector to neutral ( N) and
release the parking brake. If the battery charge level is too low, it may not be possible to release the parking brake.Connect an auxiliary battery to the vehicle ifthe battery is discharged.
> The towing vehicle can now start driving.
5. Keep the towline taut when the towing vehi- cle slows down by applying light pressure to the brake pedal. This will help avoid jarringmovements.
6. Be prepared to apply the brakes to stop the vehicle.
Jump startingDo not tow the vehicle to start the engine. Use anauxiliary battery if the start battery's charge levelis so low that the engine cannot be started.

SPECIFICATIONS
619
Coolant specifications
Recommended grade: Volvo-recommended
coolant diluted with 50% water. See package. Consult a Volvo retailer if you have any ques-tions. Do not mix different types of antifreeze as this could pose a health risk.
Related information
• Refilling coolant (p. 562)
Transmission fluid specifications
Under normal driving conditions, the transmis- sion fluid will not need to be changed during itsservice life. However, it may need to be changedif the vehicle is driven frequently in adverse driv-ing conditions.
Automatic transmission
Prescribed transmission fluid: AW1
Brake fluid specifications The medium in the hydraulic brake system is called brake fluid and is used to transfer brakingforce from e.g. pressure on the brake pedal via amaster brake cylinder to one or more slave cylin-ders, which in turn act on a mechanical brake.
Recommended grade:
Volvo Original Dot 4
class 6 or equivalent.
NOTE
Changing or filling brake fluid should be entrusted to an authorized Volvo workshop.
Related information
• Engine compartment overview (p. 559)