alternator VOLVO S90 2020 Quick Guide

MAINTENANCE AND SERVICE
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Support battery Vehicles with the Start/Stop function are equipped with two batteries – a more power-ful 12 V start battery and a support batterythat provides stronger current during thefunction's start sequence.
The 12 V support battery is located in a box next to the spring strut in the engine compartment.
NOTE
The higher the current consumption in the vehicle, the more the alternator hasto work and the batteries have to becharged = increased fuel consumption.
When the starter battery capacity hasdropped below the lowest permissiblelevel, the Start/Stop function is disen-gaged.
When the Start/Stop function is temporarily reduced due to high current consumption: The engine will auto-start, even if the driver does not lift their foot from thebrake pedal.
The support battery does not normally requiremore service than the start battery. If you haveany questions or concerns, consult a work-shop ‒ an authorized Volvo workshop is rec-
ommended.
CAUTION
If the following is not observed, the Start/ Stop function may temporarily stop work-ing after connection of an external starterbattery or battery charger:
The negative battery terminal of thevehicle's starter battery must
never be
used to connect an external starterbattery or battery charger – only thevehicle's negative charging pointshould be used as a grounding point.
NOTE
If the starter battery has been discharged to the extent that the vehicle does not havenormal electrical functions and the enginemust then be jump-started with an externalbattery or a battery charger, the Start/Stopfunction may remain activated. If the Start/Stop function shortly thereafter auto-stopsthe engine, there is a huge risk that auto-start of the engine will fail due to insuffi-cient battery capacity since the battery hadnot had time to recharge. If the vehicle has been jump-started or if there has not been enough time for thebattery to be charged with a batterycharger, the Start/Stop function should betemporarily deactivated until the batteryhas been recharged by the vehicle. At anambient temperature of about +15°C(about 60°F), the battery must be chargedby the vehicle for at least one hour. Atlower ambient temperatures, the chargingtime can increase to 3-4 hours. It is advisa-ble to charge the battery with an externalbattery charger.
Specifications for support battery
Type AGM
Voltage (V) 12

INDEX
636Type approval
HomeLink ® 429
radar system 304
U
Uniform Tire Quality Grading 506
Units 129Unlocking settings 237
with key blade 245
USB socket for connecting media 462
V
Vehicle care 596, 597, 599, 600, 601,
602
leather upholstery 594
Vehicle Event Data 33 Vehicle functions in the center display 119
Vehicle key bat. low 238 Vehicle modem connecting vehicle to Internet 482
settings 483
Vehicle recovery 425
Vehicle status 546
inflation pressure 512
Vehicle upholstery 591, 593, 594, 595
Vehicle weight 615
Ventilation 201, 202, 203 Seats 211, 212
Video 460, 462 settings 461
Voice control 142 climate 198
phone 145
radio and media 145
settings 146
VOL mark 500
Volvo ID 26 create and register 27
W
Warning lightsAdaptive Cruise Control 294
airbags SRS 93
alternator does not charge 93
brake system error 93
low oil pressure 93
parking brake applied 93
Pilot Assist 294
seat belt reminder 93
stability and traction control system 267
starter battery not charging 93
system error 93
WARNING 93
Warning sound parking brake 388
warning symbols 93 Warning symbols safety 42
Warranties 542Washer Headlights 178
washer fluid, filling 607
Windshield 178
Washer fluid 176, 607
Washer nozzles, heated 176
Waxing 596Weights Curb weight 615
Wheel bolts 515 Wheels cleaning 602
mounting 518
removal 516
Snow chains 522