2017 VOLVO V90 battery

STARTING AND DRIVING
426
Driving with a trailer
When driving with a trailer, there are a number of points that are important to think about regar-ding the towing bracket, the trailer and how theload is positioned in the trailer.
Payload depends on the car's kerb weight. The total of the weight of the passengers and allaccessories, e.g. towbar, reduces the car's pay-load by a corresponding weight. The car is supplied with the necessary equipment for towing a trailer.
• The car's towing bracket must be of anapproved type.
• Distribute the load on the trailer so that theweight on the towing bracket complies withthe specified maximum towball load. Towballload is calculated as part of the car's payload.
• Increase the tyre pressure to the recom-mended pressure for a full load. For moreinformation on tyre pressure, see the section"Approved tyre pressures".
• The engine is loaded more heavily than usualwhen driving with a trailer.
• Do not tow a heavy trailer when the car isbrand new. Wait until it has been driven atleast 1000 km.
• The brakes are loaded much more than usualon long and steep downhill slopes. Downshiftto a lower gear and adjust your speed. •
Follow the regulations in force for the permit-ted speeds and weights.
• Maintain a low speed when driving with atrailer up long, steep ascents.
• The maximum trailer weights given only applyto altitudes up to 1000 metres above sealevel. At higher altitudes, engine power andthus the car's climbing ability is decreaseddue to the reduced air density, and the maxi-mum trailer weight must therefore bereduced. The weight of the car and trailermust be decreased by 10 % for each addi-tional 1000 m (or part thereof).
• Avoid driving with a trailer on inclines of morethan 12%.
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.
Trailer connectorAn adapter is required if the car's towing bracket has a 13 pin connector and the trailer has a 7 pinconnector. Use an adapter approved by Volvo.Make sure the cable does not drag on theground.
IMPORTANT
When the engine is switched off, the constant battery voltage to the trailer connector can beswitched off automatically so as not to drainthe starter battery.
Trailer weightsInformation about Volvo's permitted trailer weights is available in the article "Towingcapacity and towball load".
WARNING
Follow the stated recommendations for trailer weights. Otherwise, the car and trailer may bedifficult to control in the event of suddenmovement and braking.
NOTE
The stated maximum permitted trailer weights are those permitted by Volvo. National vehicleregulations can further limit trailer weightsand speeds. Towbars can be certified forhigher towing weights than the car canactually tow.
Direction indicators and brake lights on the trailer
If one or more of the trailer's direction indicators or brake light bulbs is broken, the driver display

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STARTING AND DRIVING
* Option/accessory.
432
Jump startingDo not tow the car to jump start the engine. Use a donor battery if the starter battery is dischargedand the engine does not start.
IMPORTANT
The catalytic converter may be damaged dur- ing attempts to tow-start the engine.
Related information
• Warning triangle (p. 500)
• Towing eye (p. 430)
• Recovering the car (p. 432)
• Using jump starting with another battery (p. 388)
• Ignition positions (p. 385)
Recovering the car For recovery, the car is taken away with the help of another vehicle.
Call a recovery service for recovery assistance. The towing eye can be used to pull the car up onto a recovery vehicle with a flatbed platform. Applies to cars with level control
*: If the car is
equipped with air suspension , this must be disa- bled before the car is raised. Deactivating thefunction via the centre display. 1. Press
Settings in the top view.
2. Press
My CarSuspension .
3. Select
Disable Leveling Control.
The car's position and ground clearance deter- mine whether it is possible to pull it up onto aflatbed platform. If the slope of the recovery vehi-cle's ramp is too steep, or if the ground clearanceunder the car is inadequate, then the car may bedamaged if you try to pull it up. The car shouldthen be lifted using the recovery vehicle's liftingdevice.
WARNING
No one/nothing is allowed to remain behind the recovery vehicle while the car pulled uponto the flatbed platform.
IMPORTANT
The towing eye is only designed for towing on roads - not for pulling the car unstuck or out
of a ditch. Call a recovery service for recovery assistance.
IMPORTANT
Note that the car must always be transported with the wheels rolling forward.
NOTE
If the car is equipped with a towing bracket, there is no rear mounting for a towing eye.
Related information
• Towing (p. 431)
• Towing eye (p. 430)

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MAINTENANCE AND SERVICE
530
IMPORTANT
Use Volvo genuine washer fluid or equivalent with a recommended pH of between 6 and 8,in working dilution (e.g. 1:1 with neutralwater).
IMPORTANT
Use washer fluid with antifreeze when the temperature is below freezing to avoid freez-ing in the pump, reservoir and hoses.
Volume:• Cars
with headlamp washing: 5.5 litres.
• Cars
without headlamp washing: 3.5 litres.
Related information
•Windscreen and headlamp washers (p. 150)
• Opening and closing the bonnet (p. 514)
Starter battery
The electrical system is single-pole and uses the chassis and engine casing as a conductor. The starter battery is used to start up the electri- cal system and drive the starter motor as well asother electrical equipment in the car. The starter battery should be replaced by a workshop 13
.
The car has a voltage-regulated AC alternator. The starter battery is a 12 V AGM battery, designed for the carbon dioxide reducing func-tions, Start/Stop and regenerative charging, andto support the functionality of the car's differentsystems. The service life and function of the starter battery is influenced by factors such as the number ofstarts, discharging, driving style, driving condi-tions, climatic conditions etc. • Never disconnect the starter battery when the engine is running.
• Check that the cables to the starter batteryare correctly connected and properly tight-ened.
WARNING
•
The battery can generate oxyhydrogen gas, which is highly explosive. A spark canbe formed if a jump lead is connectedincorrectly, and this can be enough forthe battery to explode.
• The battery contains sulphuric acid, whichcan cause serious burns.
• If sulphuric acid comes into contact witheyes, skin or clothing, flush with largequantities of water. If acid splashes intothe eyes - seek medical attention imme-diately.
When connecting an external starter battery orbattery charger, use the car's charging points inthe engine compartment. The battery terminalson the car's starter battery in the cargo area must not be used.
During charging, both the starter battery and the support battery are charged.
13 An authorised Volvo workshop is recommended.

MAINTENANCE AND SERVICE
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531
Positive charging point
Negative charging point
IMPORTANT
When charging the starter battery and the support battery, only use a modern batterycharger with controlled charging voltage. Fastcharging function must not be used since itmay damage the battery.
IMPORTANT
If the following instruction is not observed then the energy saving function for infotain-ment may be temporarily disengaged, and/orthe message in the driver display about thestarter battery's state of charge may be tem-porarily inapplicable, following the connectionof an external starter battery or batterycharger:
• The negative battery terminal on the car's starter battery must
never be used for
connecting an external starter battery orbattery charger - only the car's negative
charging point may be used as the
grounding point.
NOTE
The life of the battery is shortened if it becomes discharged repeatedly. The life of the battery is affected by several factors, including driving conditions and cli-mate. Battery starting capacity decreasesgradually with time and therefore needs to berecharged if the car is not used for a longertime or when it is only driven short distances.Extreme cold further limits starting capacity. To maintain the battery in good condition, at least 15 minutes of driving/week is recom-mended or that the battery is connected to abattery charger with automatic trickle charg-ing. A battery that is kept fully charged has a maximum service life.

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MAINTENANCE AND SERVICE
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The starter battery is located in the cargo area.
The following table shows specifications for the starter battery.
Battery
H7 AGM
Voltage (V) 12 Cold start capacity A
- CCA B
(A) 800
Size , L×W×H (mm) 315×175×190
Capacity (Ah) 80
A According to EN standard.
B Cold Cranking Amperes.
IMPORTANT
Make sure the retaining strap is properly tightened.
Volvo recommends entrusting battery replace- ment to an authorised Volvo workshop.
IMPORTANT
When replacing the starter battery or support battery, a battery of AGM 14
type must be fit-
ted.
IMPORTANT
If the starter battery is replaced, make sure you replace it with a battery with the samecold starting capacity and type as the originalbattery (see the label on the battery).
NOTE
The starter battery's container size must be consistent with the dimensions for the origi-nal battery.
Related information
• Symbols on the batteries (p. 533)
• Support battery (p. 533) •
Using jump starting with another battery (p. 388)
14
Absorbed Glass Mat.

MAINTENANCE AND SERVICE
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533
Symbols on the batteries
There are information and warning symbols on the batteries.
Use protective goggles.
Further information in the
owner's manual for the car.
Store the battery out of the reach of children.
The battery contains corro- sive acid.
Avoid sparks and nakedflames.
Risk of explosion.
Must be taken for recycling.
NOTE
An expended starter battery or support bat- tery must be recycled in an environmentallysafe manner since it contains lead.
Related information
•Starter battery (p. 530)
• Support battery (p. 533)
Support battery Cars with Start/Stop function, in addition to the starter battery, are equipped with a support bat-tery.
Cars with the Start/Stop function are equipped with two 12 V batteries - one extra powerfulstarter battery for starting and one support bat-tery that helps during the Start/Stop function'sstarting sequence.
The support battery is located in a box next to the strut tower.
The following table shows specifications for the support battery.
Voltage (V) 12 Cold start capacity A
- CCA B
(A) 170

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MAINTENANCE AND SERVICE
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Size , L×W×H (mm) 150×90×130
Capacity (Ah) 10
AAccording to EN standard.
B Cold Cranking Amperes.
IMPORTANT
When replacing the starter battery or support battery, a battery of AGM 15
type must be fit-
ted.
NOTE
• The higher the current take-off in the car, the more the alternator must be workingand the batteries charging = Increasedfuel consumption.
• When the capacity of the starter batteryhas fallen below the lowest permissiblelevel then the Start/Stop function is dis-engaged.
Temporarily reduced Start/Stop function due to high current take-off means: •
The engine starts automatically 16
without the
driver depressing the clutch pedal (manualgearbox).
• The engine starts automatically without thedriver lifting his/her foot off the foot brakepedal (automatic gearbox).
The support battery normally requires no moreservice than the normal starter battery. A work-shop should be contacted in the event of ques-tions or problems - an authorised Volvo workshopis recommended.
IMPORTANT
If the following instruction is not observed then the Start/Stop function may temporarilycease to work after the connection of anexternal starter battery or battery charger:
• The negative battery terminal on the car's starter battery must
never be used for
connecting an external starter battery orbattery charger - only the car's negative
charging point may be used as the
grounding point.
NOTE
If the starter battery has been discharged so much that the car has no normal electricalfunctions and the engine is then jump-startedwith an external battery or a battery charger,the Start/Stop function will continue to beactivated. If the Start/Stop function thenauto-stops the engine shortly after, there is agreat risk that engine auto-start will fail dueto insufficient battery capacity, because thebattery has not had the opportunity torecharge. If the car has been jump-started, or if there is insufficient time to charge the battery with abattery charger, the recommendation is totemporarily deactivate the Start/Stop functionuntil the battery has been recharged by thecar. In an outside temperature of +15 °C, thebattery needs to be charged for at least1 hour by the car. In a lower outside tempera-ture, the charging time may increase to3-4 hours. The recommendation is to chargethe battery using an external battery charger.
Related information
• Starter battery (p. 530)
• Start/Stop (p. 396)
15
Absorbed Glass Mat.
16 Automatic starting can only take place if the gear lever is in neutral position.

MAINTENANCE AND SERVICE
535
•
Using jump starting with another battery (p. 388)
• Symbols on the batteries (p. 533)
Fuses All electrical functions and components are pro- tected by a number of fuses in order to protectthe car's electrical system from damage by shortcircuiting or overloading.
If an electrical component or function does not work, it may be because the component's fusewas temporarily overloaded and failed. If thesame fuse fails repeatedly then there is a fault inthe circuit. Volvo recommends contacting anauthorised Volvo workshop for checking.
Location of central electrical units
Central electrical unit locations in a left-hand drive car. In a right-hand drive car the centralelectrical units under the glovebox change sides.
Engine compartment
Under the glovebox
Cargo area
Related information
•Replacing a fuse (p. 536)