2019-2026 Volvo V90 SUV STARTING AND DRIVING -> Driving with a trailer User Manual
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STARTING AND DRIVING -> Driving with a trailer for Your Volvo V90 SUV Second Generation (2019-2026)

STARTING AND DRIVING  
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Selecting ignition mode (p. 386)  
Support battery (p. 586)  
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Driving with a trailer  
NOTE  
There are a number of things to consider  
when towing a trailer, such as the towbar, the  
trailer and how the load is distributed in the  
trailer.  
Load-carrying capacity is determined by the  
vehicle's curb weight. The total weight of all  
passengers and any installed accessories, e.g.  
towbar, reduces the vehicle's load-carrying  
capacity by the corresponding amount.  
If the starter battery has been discharged  
to the extent that the vehicle does not have  
normal electrical functions and the engine  
must then be jump-started with an external  
battery or a battery charger, the Start/Stop  
function may remain activated. If the Start/  
Stop function shortly thereafter auto-stops  
the engine, there is a huge risk that auto-  
start of the engine will fail due to insuffi-  
cient battery capacity since the battery had  
not had time to recharge.  
Towbars used on the vehicle must be  
approved for the applicable use.  
•
Distribute the load on the trailer so that  
the weight on the towbar complies with  
the specified maximum towball weight.  
The tongue weight is calculated as part of  
the vehicle's payload.  
•
If the vehicle has been jump-started or if  
there has not been enough time for the  
battery to be charged with a battery  
charger, the Start/Stop function should be  
temporarily deactivated until the battery  
has been recharged by the vehicle. At an  
ambient temperature of about +15°C  
(about 60°F), the battery must be charged  
by the vehicle for at least one hour. At  
lower ambient temperatures, the charging  
time can increase to 3-4 hours. It is advisa-  
ble to charge the battery with an external  
battery charger.  
Increase the tire pressure to the recom-  
mended pressure for a full load.  
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The engine is subjected to more load than  
usual when towing a trailer.  
Towing a trailer affects the vehicle's han-  
dling, durability and driving economy.  
Do not drive with a heavy trailer when the  
vehicle is very new. Wait until the mileage  
has reached at least 1000 km (620 miles).  
Related information  
On long and steep downgrades, the vehi-  
cle's brakes are subjected to much more  
load than usual. When manually shifting,  
downshift and adapt speed accordingly.  
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Starting the vehicle (p. 382)  
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Ignition modes (p. 385)  
Adjusting the steering wheel (p. 197)  
426  
STARTING AND DRIVING  
Follow applicable regulations regarding  
permitted speed and weight.  
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CAUTION  
NOTE  
Bumper-attached trailer hitches must  
not be used on Volvos, nor should  
safety chains be attached to the  
bumper.  
Extreme weather conditions, towing a  
trailer, high altitude and lower fuel grade  
than recommended are factors that can  
significantly increase the vehicle's fuel con-  
sumption.  
•
Drive slowly when towing a trailer up a  
long and steep incline.  
The maximum trailer weights given only  
apply to altitudes up to 1000 meters  
(3280 feet) above sea level. At higher alti-  
tudes, engine power (and thus the vehi-  
cle's climbing ability) is decreased due to  
the reduced air density, and the maximum  
trailer weight must therefore be reduced.  
The weight of the vehicle and trailer must  
be decreased by 10% for each additional  
1000 m (3280 feet) or part thereof.  
Trailer hitches attaching to the vehicle  
rear axle must not be used.  
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Trailer weights  
WARNING  
Never connect a trailer's hydraulic  
brake system directly to the vehicle  
brake system, nor a trailer's lighting  
system directly to the vehicle lighting  
system. Consult your nearest author-  
ized Volvo retailer for correct installa-  
tion.  
Please adhere to the recommendations  
provided for trailer weight. If the recom-  
mendations are not followed, the vehicle  
and trailer may be difficult to control during  
evasive maneuvers and braking.  
Avoid driving with a trailer on inclines of  
more than 12%.  
•
When towing a trailer, the trailer's  
safety chains or wire must be correctly  
fastened to the attachment points pro-  
vided in the trailer hitch on the vehicle.  
The safety chain or wire must never be  
fastened to or wound around the tow-  
ing ball.  
•
Avoid overloading and other incorrect use.  
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•
NOTE  
The trailer's brakes must be balanced with  
the vehicle's brakes to help ensure safe  
stops (follow applicable local regulations).  
The specified maximum trailer weights are  
those permitted by Volvo. National vehicle  
regulations may set additional restrictions  
on trailer weight and speed. The trailer  
hitches may be certified for higher towing  
weights than the vehicle is permitted to  
tow.  
NOTE  
The optional detachable trailer hitch may  
not be available in all markets or on all  
models. Consult your Volvo retailer.  
Self-leveling suspension*  
The vehicle's self-leveling system attempts to  
keep the vehicle at a constant level, regardless  
of load (up to the maximum permitted weight).  
When the vehicle is stationary, the rear end of  
}}  
* Option/accessory. 427  
STARTING AND DRIVING  
|| the vehicle will be slightly lowered, which is  
Related information  
Trailer Stability Assist*  
normal.  
Trailer Stability Assist (TSA17) is a function  
designed to help stabilize a vehicle that is  
towing a trailer when the vehicle and trailer  
have begun to sway. The function is part of  
the Electronic Stability Control system  
Trailer Stability Assist* (p. 428)  
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Checking trailer lights (p. 429)  
Driving in hilly terrain or hot weather  
In certain conditions, there is a risk of over-  
heating when driving with a trailer. If overheat-  
ing of the engine and drive system is detected,  
a warning symbol will illuminate in the instru-  
ment panel and a message will appear.  
Towing capacity and tongue weight  
(p. 632)  
Overheating of engine and transmission  
(p. 423)  
•
ESC18  
.
Reasons for swaying  
A vehicle towing a trailer may begin to sway  
for various reasons. Normally this only occurs  
at high speeds. However, if the trailer is over-  
loaded or unevenly distributed, e.g. too far  
back, there is a risk of swaying even at low  
speeds.  
The automatic transmission selects the opti-  
mal gear for the current load and engine  
speed.  
Steep inclines  
Do not lock the automatic transmission into a  
higher gear than what the engine can handle ‒  
it is not always preferable to drive in high  
gears at low rpm.  
Swaying may be caused by factors such as:  
The vehicle and trailer are hit by a sudden,  
strong crosswind.  
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Parking on a hill  
1. Depress the brake pedal.  
The vehicle and trailer are traveling on an  
uneven road or over a bump.  
2. Apply the parking brake.  
3. Put the gear selector in P.  
4. Release the brake pedal.  
Sudden movements of the steering wheel.  
Once swaying has begun, it can be difficult or  
impossible to stop it. This makes the vehicle  
and trailer difficult to control and there is a risk  
of swerving into oncoming traffic or driving off  
the road.  
Put chocks behind the wheels when the vehi-  
cle is parked on a hill with a trailer attached.  
Starting on a hill  
1. Depress the brake pedal.  
Trailer Stability Assist function  
2. Put the gear selector in D.  
Trailer Stability Assist continuously monitors  
the vehicle's movements, particularly lateral  
movements. If swaying is detected, the brakes  
3. Release the parking brake.  
4. Release the brake pedal and start driving.  
428  
* Option/accessory.  
STARTING AND DRIVING  
are applied individually on the front wheels,  
which has a stabilizing effect on the vehicle  
and trailer. This is often enough to enable the  
driver to regain control of the vehicle.  
When Trailer Stability Assist  
is activated, the ESC symbol  
is displayed in the instrument  
panel.  
Checking trailer lights  
When connecting a trailer, make sure that all  
of the lights on the trailer are functioning  
before starting to drive.  
If the Trailer Stability Assist function's first  
attempt is not adequate to stop the swaying  
motion, the brakes are applied on all wheels  
and engine power is temporarily reduced. As  
the swaying motion begins to decrease and  
the vehicle and trailer have once again  
become stable, TSA stops regulating the  
brakes/engine power and the driver regains  
control of the vehicle.  
Trailer turn signals and brake lights  
If one or more of the turn signals or brake  
lights on the trailer is not working, a symbol  
and message will be displayed in the instru-  
ment panel. The other lights on the trailer  
must be checked manually by the driver before  
the vehicle is driven.  
Related information  
Driving with a trailer (p. 426)  
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Electronic Stability Control (p. 271)  
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Symbol Message  
NOTE  
Trailer turn indicator Right  
turn indicator malfunction  
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Trailer Stability Assist is deactivated if the  
driver selects the sport mode by deactivat-  
ing ESC in the center display's menu sys-  
tem.  
Trailer turn indicator Left  
turn indicator malfunction  
Trailer brake light Malfunc-  
tion  
•
Trailer Stability Assist may not intervene if the  
driver tries to compensate for the swaying  
motion by moving the steering wheel rapidly,  
because the system will then not be able to  
determine if it is the trailer or the driver caus-  
ing the swaying.  
If any of the trailer's turn signal lights is not  
working, the turn signal symbol in the instru-  
ment panel will also flash more quickly than  
normal.  
17  
Trailer Stability Assist  
Electronic Stability Control  
18  
}}  
429  
STARTING AND DRIVING  
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3. Get out of the vehicle to perform the  
check.  
Trailer rear fog light  
Towing using a towline  
This section refers to one vehicle being towed  
behind another using a towline.  
Before towing another vehicle, check applica-  
ble speed limit regulations.  
When a trailer is connected, the vehicle's rear  
fog light may not illuminate and rear fog light  
functionality is instead transferred to the  
trailer. If this is the case, check to see if the  
trailer is equipped with a rear fog light before  
activating the vehicle's fog lights when driving  
with a trailer to help ensure safe operation.  
> All of the lights on the trailer will begin  
flashing, and then illuminate separately  
one at a time.  
4. Visually check that all of the trailer's lights  
are functioning correctly.  
Preparations and towing  
5. After a short time, all of the trailer's lights  
will start flashing again.  
CAUTION  
Checking trailer lights*  
Vehicles with the small gear selector can-  
not shift out of the P position when the  
engine is off. Contact an authorized Volvo  
workshop or a professional towing com-  
pany for assistance towing the vehicle.  
Automatic check  
> The light check is completed.  
When the trailer has been connected to the  
vehicle's electrical system, its lights can be  
checked by automatically activating them.  
This function helps the driver check that the  
trailer's lights are functioning correctly before  
starting to drive.  
Disabling the automatic check  
The automatic light check can be disabled in  
the center display.  
1.  
2. Tap My Car Lights and Lighting.  
Tap Settings in the Top view.  
CAUTION  
In order to perform this check, the vehicle  
must be switched off.  
Note that the vehicle must always be  
towed with the wheels rolling forward.  
3.  
Deselect Automatic Trailer Lamp  
Check.  
1. When a trailer is connected to the towbar,  
the message Automatic Trailer Lamp  
Check will appear in the instrument panel.  
Do not tow a vehicle with automatic  
transmission at a speed greater than  
80 km/h (50 mph) or for a distance  
greater than 80 km (50 miles).  
•
Manual check  
If the automatic check has been disabled, the  
check can be started manually.  
2. Acknowledge the message by pressing  
the O button on the right-side steering  
wheel keypad.  
1.  
2. Tap My Car Lights and Lighting.  
Tap Settings in the Top view.  
> The light check will begin.  
3.  
Select Manual Trailer Lamp Check.  
> The light check will begin. Get out of  
the vehicle to perform the check.  
Related information  
Driving with a trailer (p. 426)  
•
430  
* Option/accessory.  
STARTING AND DRIVING  
5. Keep the towline taut when the towing  
vehicle slows down by applying light pres-  
sure to the brake pedal. This will help  
avoid jarring movements.  
Attaching and removing the  
WARNING  
towing eyelet  
Ignition mode II must be active – all  
airbags are deactivated in ignition  
mode I.  
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Use the towing eyelet when towing. Screw  
the towing eyelet securely into place in the  
threaded outlet behind the cover on the right-  
hand side of the front and rear bumpers.  
6. Be prepared to apply the brakes to stop  
the vehicle.  
Always have the remote key in the  
vehicle when it is towed.  
NOTE  
Jump starting  
If the vehicle is equipped with a towbar,  
there is no rear attachment for the towing  
eye.  
Do not tow the vehicle to start the engine. Use  
an auxiliary battery if the start battery's charge  
level is so low that the engine cannot be  
started.  
WARNING  
The brake and steering servos do not work  
when the engine is off – it takes  
about 5 times more pressure on the brake  
pedal and steering requires much more  
effort than normal.  
Attaching the towing eyelet  
CAUTION  
Attempting to tow with the engine running  
could result in damage to the three-way  
catalytic converter.  
1. Turn on the hazard warning flashers.  
2. Attach the towline to the towing eyelet.  
3. Put the vehicle in ignition mode II – with-  
out pressing the brake pedal, turn the start  
knob clockwise and hold it there for about  
4 seconds. Release the knob, which will  
automatically return to its original position.  
Related information  
Attaching and removing the towing eyelet  
(p. 431)  
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Hazard warning flashers (p. 161)  
Recovery (p. 433)  
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Take out the towing eyelet, which is  
stored in a foam block under the floor in  
the cargo compartment.  
4. Move the gear selector to neutral (N) and  
release the parking brake.  
Jump starting using another battery  
(p. 424)  
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 if the battery is discharged.  
Selecting ignition mode (p. 386)  
Transmission (p. 395)  
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> The towing vehicle can now start driv-  
ing.  
}}  
431  

Related Topics

STARTING AND DRIVING
Starting the vehicle Ignition modes Brakes Parking brake Transmission All Wheel Drive (AWD)* Drive modes* Start/Stop function Leveling control* and suspension Refueling Jump starting using another battery

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