2018 VOLVO XC90 T8 stop start

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HYBRID INFORMATION
414
Related information
•Charging the hybrid battery (p. 407)
• Opening and closing the charging socket cover (p. 411)
• Charging status in the vehicle's chargingsocket (p. 414)
• Charging status in the instrument panel(p. 416)
• Charging status in the charging cable'scharging module (p. 415)
• Stopping hybrid battery charging (p. 418)
Charging status in the vehicle'scharging socket
The charging status is indicated by an LED light in the charging socket.
Location of the LED indicator light in the vehicle's charging socket.
The LED indicator light shows the current charge status during charging. If the LED indicator lightis not illuminated, check to make sure the cableis securely connected in the wall outlet and in theoutlet in the vehicle. A white, red or yellow lightilluminates when the passenger compartmentlighting is activated and will remain illuminated fora short time after the passenger compartmentlighting has gone out.
LED indicatorlight's colorMeaning
White Courtesy light. Yellow Wait modeA
– waiting for
charging to start.
Flashing green Charging is in progress B
.
Green Charging completed C
.
Red Malfunction.
A E.g. after a door has been opened or if the charging cable han- dle is not locked in place.
B The more slowly the light flashes, the closer the battery is tobeing fully charged.
C The light will go out after a short time.
Related information
• Charging the hybrid battery (p. 407)
• Charging status in the instrument panel (p. 416)
• Charging status in the charging cable'scharging module (p. 415)
• Stopping hybrid battery charging (p. 418)

HYBRID INFORMATION
415
Charging status in the chargingcable's charging moduleThe red and blue lights in the charging module
indicate the status of ongoing and completed charging.
Charge module: 1. Red warning light, 2. Blue status indi- cator
When the charge module is initially plugged into a wall outlet, the red warning light will flash onceto indicate that a startup safety check has beenperformed. When the safety check has beencompleted, the blue status indicator will glowsteadily and the red warning light will be off. Thecharger is now ready to be used. If the red warn-ing light continues to flash or glows steadily, afault has been detected and the charger will notdeliver power to the vehicle. Contact a Volvoretailer or a certified Volvo service technician. When the charging cable is connected to thevehicle's charging socket, the blue light will flashonce. Charging cable connected to the vehicle's charg- ing socket:
Indicatorlight's colorMeaning
Flashing blue Charging is in progress. Thelight flashes about once everyother second.
Solid blue Charging completed. This will also be indicated in the instru-ment panel
Related information
•Charging the hybrid battery (p. 407)
• Charging status in the vehicle's charging socket (p. 414)
• Charging status in the instrument panel(p. 416)
• Stopping hybrid battery charging (p. 418)

HYBRID INFORMATION
417
NOTE
If the instrument panel is not used, it will go dark after a period of time. To reactivate thedisplay: •depress the brake pedal,
• open one of the doors, or
• put the ignition in mode
I by turning the
START knob clockwise and then releas-
ing.
Related information
• Charging the hybrid battery (p. 407)
• Twin Engine symbols and messages in the instrument panel (p. 419)
• Charging status in the vehicle's chargingsocket (p. 414)
• Charging status in the charging cable'scharging module (p. 415)
• Stopping hybrid battery charging (p. 418)

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HYBRID INFORMATION
420
SymbolMessageMeaning
Hybrid system failure Service requiredThe hybrid system is not functioning. Contact a workshopA
to have the system checked as soon as
possible.
Charge cable Remove before startDisplayed when the driver attempts to start the vehicle with the charging cable still connected. Remove the charging cable and close the charger cover.
Charge cable Removed? Turn and hold start knob 7sDisplayed when the driver again attempts to start the vehicle with the charging cable connected. Disconnect the charging cable or verify that the cable is completely disconnected and the chargercover is closed.
A An authorized Volvo workshop is recommended.
Related information
• Initiating hybrid battery charging (p. 412)
• Stopping hybrid battery charging (p. 418)
• Charging the hybrid battery (p. 407)
• Warning symbols in the instrument panel (p. 97)
• Indicator symbols in the instrument panel(p. 94)
• Hybrid gauge (p. 87)
• Hybrid gauge (p. 88)

STARTING AND DRIVING
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429
Brake functions
The vehicle's brakes are used to reduce speed or prevent the vehicle from rolling.
In addition to the wheel brakes and parking brakes, the vehicle is also equipped with a num-ber of automatic brake assist functions. Thesesystems help the driver by e.g. keeping the vehi-cle stationary when the brake pedal is notdepressed (e.g. at a traffic light or intersection),when starting up a hill or when driving down a hill. Depending on how the vehicle is equipped, the following brake assist functions may be included:
• Auto-hold brakes (Auto Hold)
• Hill Start Assist (Hill Start Assist)
• Braking assist after a collision
• City Safety
• Hill Descent Control (Hill Descent Control)
Related information
•
Brakes (p. 429)
• Parking brake (p. 432)
• Auto-hold brakes (p. 436)
• Braking assist after a collision (p. 437)
• Hill Start Assist (p. 437)
• City Safety
™ (p. 335)
• Hill Descent Control (p. 454)
Brakes The brake pedal is used to apply the vehicle's regular brakes, which are part of the brake sys-tem.
The vehicle is equipped with two brake circuits. If one brake circuit is damaged, the brake pedal willgo down further when depressed. More pressurewill then be required from the driver for normalbraking effect.
WARNING
If the vehicle does not have electrical current and both the electric motor and the gasolineengine are switched off, the brakes cannot beused to stop the vehicle.
In very hilly areas or when driving with a heavy load, gear position B can be used to augment the
brakes with engine braking. Use the Off Road drive mode to increase the engine braking effect when driving on steepdowngrades at low speeds.
Anti-lock brakesThe vehicle is equipped with an Anti-lock BrakingSystem (ABS), which can help prevent thewheels from locking and help maintain steeringcontrol when braking. Vibrations may be felt fromthe brake pedal when ABS is operating, which isnormal. After the vehicle is started, a brief test of the ABS system is automatically performed when the driver releases the brake pedal. An additionalautomatic test of the system may be performedwhen the vehicle is traveling at a low speed. Dur-ing the test, the brake pedal may feel as though itis pulsating.
Light braking charges the hybrid batteryWhen the brakes are applied lightly, the electricmotor braking function is used. This converts thevehicle's kinetic energy into electrical energy,which is used to charge the hybrid battery. Whenthe battery is being charged with the electricmotor braking function, this will be indicated inthe instrument panel.
When the battery is being charged with the electric motor braking function, this will be indicated in theinstrument panel.
This function is active at speeds in the range of 150-5 km/h (93-3 mph). When braking atspeeds outside of this range, or during harderbraking, the hydraulic braking system is used to

STARTING AND DRIVING
431
Brake Assist System
The brake enhancing system, Brake Assist
System (BAS), helps increase braking force andthereby reduce braking distance.
The system monitors the driver's braking habits and increases braking force when necessary.Braking force can be increased up to the point atwhich the ABS intervenes. The function is deacti-vated when pressure on the brake pedal isdecreased.
Related information
• Brakes (p. 429)
Braking on wet roads
Prolonged driving in heavy rain without braking may cause braking effect to be slightly delayedthe first time the brakes are applied.
This may also occur after washing the vehicle. It will then be necessary to apply greater pressureto the brake pedal. You should therefore maintaina greater distance to the vehicle ahead. Firmly apply the brakes after washing the vehicle or driving on wet roads. This helps warm up thebrake discs, enabling them to dry more quicklyand protecting them against corrosion. Considerthe current traffic situation when braking.
Related information
• Brakes (p. 429)
• Braking on salted roads (p. 431)
Braking on salted roads When driving on salted roads, a layer of salt may form on the brake discs and brake pads.
This could increase stopping distance. Maintain an extra large safety distance to the vehicleahead. Make sure to also:
• Apply the brakes from time to time to helpremove salt. Make sure braking does notpose a risk to any other road users.
• Gently apply the brakes when you have fin-ished driving and before driving again.
Related information
•Brakes (p. 429)
• Braking on wet roads (p. 431)

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Maintenance of the brake system
Regularly check the brake system components for wear.
To keep the vehicle as safe and reliable as possi- ble, follow the Volvo service schedule specified inthe Warranty and Maintenance Records Informa-tion booklet. New and replaced brake pads andbrake discs do not provide optimal braking effectuntil they are "broken in" by driving a few hun-dred kilometers (miles). Compensate for thereduced braking effect by applying greater pres-sure to the brake pedal. Volvo recommends onlyusing brake pads approved for your Volvo.
CAUTION
The brake system's components should be regularly checked for wear. Contact a workshop for advice on how to do this or let a workshop perform the inspection- an authorized Volvo workshop is recom-mended.
Related information
• Brakes (p. 429)
Parking brake The parking brake helps keep the vehicle sta- tionary by mechanically locking two wheels.
The parking brake controls are located in the tunnel console between the seats.
When the electric parking brake is being applied, a faint sound can be heard from the brake's elec-tric motor. This sound can also be heard duringthe automatic function check of the parkingbrake. If the vehicle is stationary when the parking brake is applied, it will only be applied to the rearwheels. If it is applied while the vehicle is moving,the normal brakes will be used on all four wheels.Braking will be transferred to only the rearwheels when the vehicle is almost stopped.
Related information
•Activating and deactivating the parking brake(p. 433)
• Parking on a hill (p. 434)
• Parking brake malfunction (p. 435)
• Auto-hold brakes (p. 436)

STARTING AND DRIVING
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Auto-hold brakesWith the Auto-hold brake function, the driver can release the brake pedal and the brakes willremain applied, for example, when the vehiclehas stopped at a traffic light or intersection.
When the vehicle stops, the brakes are activated automatically. The function can use either thenormal brakes or the parking brakes to keep thevehicle stationary and works on flat surfaces orhills. When driving off, the brakes will be automat-ically released if the driver's seat belt is buckled.
NOTE
When braking to a stop on an uphill or down- hill gradient, depress the brake pedal withslightly more force than usual before releas-ing to ensure that the vehicle cannot move atall.
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
SymbolMeaning
This symbol illuminates when the function is using the normal brakesto keep the vehicle stationary.
A
B This symbol illuminates when the function is using the parking braketo keep the vehicle stationary.
A
Canadian models.
B US models.
Related information
• Activating and deactivating Auto-hold at a standstill (p. 436)
• Brakes (p. 429)
• Parking brake (p. 432)
• Hill Start Assist (p. 437)
Activating and deactivating Auto-hold at a standstill The Auto-hold brake function at a standstill is activated with the button in the tunnel console.
–Press the button in the tunnel console to activate or deactivate the function.
> The indicator light in the button will illumi-
nate when the function is activated. The function will remain active the next timethe vehicle is started.