2017 VOLVO V90 trailer

STARTING AND DRIVING
* Option/accessory.427
shows a symbol and a message. Other lamps on the trailer must be checked manually by thedriver before departure, see the heading "Check-ing trailer lamps".
Symbol
Message
•Trailer turn indicator Right
turn indicator malfunction
•Trailer turn indicator Left
turn indicator malfunction
•Trailer brake light Malfunc-
tion
If any lamp for the trailer's direction indicators is broken, the driver display symbol for directionindicators will also flash more quickly than nor-mal.
Checking trailer lamps *
Automatic checking
After a trailer is connected electrically, it is possi- ble to check that the trailer lamps are working viaan automatic lamp activation. The function helpsthe driver check that the trailer lamps are workingbefore starting off. The engine must be switched off to perform thecheck.
1. When a trailer is connected to the towing
bracket, the
Automatic Trailer Lamp
Check message is shown in the driver dis-
play.
2. Confirm the message by pressing the right- hand steering wheel keypad's O button.
> The lamp check starts.
3. Exit the car to check lamp functionality. > All trailer lamps start to flash - then thelamps are switched on one at a time.
4. Visually check that all lamps available on the trailer are operational.
5. After a moment, all lamps on the trailer flash again.
> The check is complete.
Switching off automatic checking
The automatic checking function can be switched off in the centre display. 1.Press
Settings in the top view.
2. Press
My CarLights and Lighting.
3. Deselect
Automatic Trailer Lamp Check.
Manual checking
If the automatic checking is switched off then it is possible to start the check manually. 1.Press
Settings in the top view. 2.
Press
My CarLights and Lighting.
3. Select
Manual Trailer Lamp Check.
> The lamp check starts. Exit the car to check lamp functionality.
Level control *The car's system for level control endeavours to maintain a constant height regardless of load (upto the maximum permissible weight). When thecar is stationary the rear of the car lowers slightly,which is normal.
Related information
•Driving with a trailer under special conditions(p. 428)
• Towing capacity and towball load (p. 564)
• Trailer Stability Assist
* (p. 428)
• Approved tyre pressures (p. 574)
• Towing bracket
* (p. 422)

STARTING AND DRIVING
* Option/accessory.
428
Driving with a trailer under special conditions
When driving with a trailer in hilly terrain in a hot climate there may be a risk of overheating.
In the event of overheating, a warning symbol illu- minates in the driver display together with a mes-sage, see section "Overheating in the engine anddrive system". The following only applies to cars with automatic gearbox. The automatic gearbox selects the optimum gear related to load and engine speed.
Steep inclinesDo not lock the automatic gearbox in a highergear than the engine "can cope with" - it is notalways a good idea to drive at a high gear withlow engine speed.
Parking on a hill1. Depress the brake pedal fully.
2. Activate the parking brake.3. Select gear position P.
4. Release the brake pedal.Block the wheels with chocks when parking a car with hitched trailer on a hill.
Starting on a hill1. Depress the brake pedal fully. 2.
Select gear position D.
3. Releasing the parking brake.
4. Release the brake pedal and start driving off.
Related information
• Driving with a trailer (p. 426)
• Overheating in the engine and drive system (p. 414)
• Using the parking brake (p. 410)
Trailer Stability Assist
*
The function of the trailer stability assist Trailer Stability Assist (TSA) is to stabilise cars withattached trailers in situations where they begin

STARTING AND DRIVING
429
snaking. The function is included in the stability system ESC19
.
Reasons for snakingThe snaking phenomenon can occur with any car/trailer combination. Snaking normally occursat high speeds. But, there is a risk of it occurringat lower speeds if the trailer is overloaded or theload is improperly distributed, e.g. too far back. In order for snaking to occur, there must be a triggering factor, e.g.: • Car with trailer subjected to a sudden and powerful side wind.
• Car with trailer drives on an uneven road sur-face or in a pothole.
• Sweeping steering wheel movements.
If snaking has started, it could be difficult or evenimpossible to suppress. This makes the car/trailer combination difficult to control and there isa risk that you could, for example, end up in thewrong lane or leave the carriageway.
Trailer Stability Assist functionThe trailer stability assist function continuallymonitors car movements, particularly lateralmovements. If snaking is detected, the frontwheels are individually braked. This serves to sta-bilise the car/trailer combination. This is oftenenough to help the driver regain control of thecar. If snaking is not eliminated the first time thattrailer stability assist comes into action, the car/trailer combination is braked with all wheels andengine power is reduced. Once snaking has beengradually suppressed and the car/trailer combi-nation is stable once again, the system stopsregulating and the driver once again has full con-trol of the car.
NOTE
The stability function is deactivated if the driver selects Sport mode by deactivating
ESC via the menu system in the centre dis-
play.
The trailer stability assist may fail to engage if the driver uses severe steering wheel movements totry to rectify the snaking because in such a situa-tion the system cannot determine whether it isthe trailer or the driver that is causing the snak-ing.
When trailer stability assist is operating, the ESC symbol
flashes in the driver display.
Related information
• Driving with a trailer (p. 426)
• Driving with a trailer under special conditions (p. 428)
• Electronic stability control (p. 273)
19
Electronic Stability Control (Electronic stability control)

SPECIFICATIONS
563
Weights Max. gross vehicle weight, etc. can be read on a label in the car.
Kerb weight includes the driver, the fuel tank 90% full and all fluids. The weight of passengers and accessories, and towball load (when a trailer is hitched) influencethe load capacity and are not included in the kerbweight. Permitted max. load = Gross vehicle weight - Kerb weight.
NOTE
The documented kerb weight applies to cars in the standard version - i.e. a car withoutextra equipment or accessories. This meansthat for every accessory added the loadingcapacity of the car is reduced correspondinglyby the weight of the accessory. Examples of accessories that reduce load capacity are the different equipment levels(e.g. Kinetic, Momentum, Summum), as wellas other accessories such as towbar, loadcarrier, space box, audio system, auxiliarylamps, GPS, fuel-driven heater, safety grille,carpets, cargo cover, power seats, etc. Weighing the car is a certain way of ascer- taining the kerb weight of your own particularcar.
WARNING
The car's driving characteristics change depending on how heavily it is loaded andhow the load is distributed.
The decal is positioned on the door pillar, and will be visible when the right-hand rear door is opened.
Max. gross vehicle weight
Max. train weight (car+trailer)
Max. front axle load
Max. rear axle load
Equipment level
Max. load: See registration document. Max. roof load: 100 kg.
Related information
• Type designations (p. 558)
• Towing capacity and towball load (p. 564)

SPECIFICATIONS
564
Towing capacity and towball load
Towing capacity and towball load for driving with a trailer can be read in the tables.Max. weight braked trailer
NOTE
The use of a stabiliser hitch on the towing bracket is recommended for trailers heavierthan 1800 kg.
Engine Engine codeA
Gearbox Max. weight braked trailer (kg) Max. towball load (kg)
T5/Bi-Fuel B4204T23 Automatic 1800 110
T6 AWD B4204T27 Automatic 1800
B
2200 C 110
D3 D4204T9 Manual select 1800 110
D3 D4204T9 Automatic 1800 110
D3 AWD D4204T4 Automatic 1800
B
2200 C 110
D4 D4204T14 Manual select 1800 110
D4 D4204T14 Automatic 1800 110

SPECIFICATIONS
* Option/accessory.565
Engine
Engine codeA
Gearbox Max. weight braked trailer (kg) Max. towball load (kg)
D4 AWD D4204T14 Automatic 1800
B
2200 C 110
D5 AWD D4204T23 Automatic 1800
B
2200 C 110
A
The engine code, component number and serial number can be found on the engine.
B Applies to cars that are not equipped for a higher towing weight.
C Applies to cars that are equipped for a higher towing weight.
IMPORTANT
When driving with a trailer, it is permitted to exceed the vehicle's gross vehicle weight(including towball load) by a maximum of 100kg, provided that speed is limited to 100km/h (62 mph). National legal requirementsfor the vehicle combination, such as speed,etc. must be observed.
Max. weight unbraked trailer
Max. weight unbraked trailer (kg) Max. towball load (kg)
750 50
Related information
•Type designations (p. 558)
• Weights (p. 563)
• Driving with a trailer (p. 426) •
Trailer Stability Assist
* (p. 428)

SPECIFICATIONS
569
Adverse driving conditions for engine oil Adverse driving conditions can lead to abnor- mally high oil temperature or oil consumption.Below are some examples of adverse drivingconditions.
Check the oil level more frequently for long jour- neys:• towing a caravan or trailer
• in mountainous regions
• at high speeds
• in temperatures colder than -30 °C or hotterthan +40 °C.
The above also apply to shorter driving distancesat low temperatures. Choose a fully synthetic engine oil for adverse driving conditions. It provides extra protection forthe engine.
Volvo recommends:
IMPORTANT
In order to fulfil the requirements for the engine's service intervals all engines are filledwith a specially adapted synthetic engine oilat the factory. The choice of oil has beenmade very carefully with regard to service life,starting characteristics, fuel consumption andenvironmental impact. An approved engine oil must be used in order that the recommended service intervals canbe applied. Only use a prescribed grade of oilfor both filling and oil change, otherwise thereis a risk of the service life, starting characte-ristics, fuel consumption and environmentalimpact of the car being affected. If engine oil of the prescribed grade and vis- cosity is not used, engine related componentsmay become damaged. Volvo Car Corporationdisclaims any liability for any such damage. Volvo recommends that oil changes are car- ried out at an authorised Volvo workshop.
Related information
• Engine oil — specifications (p. 567)
• Engine oil (p. 516)

||
SPECIFICATIONS
572
Refrigerant
Cars with refrigerant R134a
WeightPrescribed grade
700 g R134a
WARNING
The air conditioning system contains pressur- ised refrigerant R134a. This system must onlybe serviced and repaired by an authorisedworkshop.
Cars with refrigerant R1234yf
Weight Prescribed grade
650 g R1234yf
WARNING
The air conditioning system contains pressur- ised refrigerant R1234yf. In accordance withSAE J2845 (Technician Training for SafeService and Containment of RefrigerantsUsed in Mobile A/C System), service andrepair of the refrigerant system must only beperformed by trained and certified techniciansin order to ensure the safety of the system.
Compressor oil
Volume Prescribed grade
60 ml PAG SP-A2
Evaporator
IMPORTANT
The A/C system's evaporator must never be repaired or replaced with a previously usedevaporator. A new evaporator must be certi-fied and labelled in accordance with SAEJ2842.
Related information
• Servicing the climate control system (p. 520)
• Type designations (p. 558)
Fuel consumption and CO2 emissions
Fuel consumption and CO2 emissions can be affected negatively by several causes.
Examples of reasons for increased fuel consump- tion are as follows:• If the car is equipped with extra equipmentthat affects the car's weight.
• The driver's driving style.
• If the customer chooses wheels other thanthose fitted as standard on the model's basicversion then rolling resistance may increase.
• High speed results in increased wind resis-tance.
• Fuel quality, road and traffic conditions,weather and the condition of the car.
A combination of the above-mentioned examplescan result in significantly increased consumption.
NOTE
Extreme weather conditions, driving with a trailer or driving at high altitudes in combina-tion with fuel quality are factors that consider-ably increase the car's fuel consumption.