Checking Trailer Lights - Volvo V90 Owner's Manual

Checking trailer lights

When connecting a trailer, make sure that all of
the lights on the trailer are functioning before
starting to drive.
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 mes-
sage will be displayed in the instrument panel.
The other lights on the trailer must be checked
manually by the driver before the vehicle is driven.
Symbol Message
•
Trailer turn indicator Right
turn indicator malfunction
•
Trailer turn indicator Left
turn indicator malfunction
•
Trailer brake light Malfunc-
tion
If any of the trailer's turn signal lights is not work-
ing, the turn signal symbol in the instrument
panel will also flash more quickly than normal.
Trailer rear fog light
When a trailer is connected, the vehicle's rear fog
light may not illuminate and rear fog light func-
tionality 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.
Checking trailer lights*
Automatic check
When the trailer has been connected to the vehi-
cle'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.
In order to perform this check, the engine must
be turned off.
1. When a trailer is connected to the towbar,
the message Automatic Trailer Lamp
Check will appear in the instrument panel.
2. Acknowledge the message by pressing the
O button on the right-side steering wheel
keypad.
> The light check will begin.
3. Get out of the vehicle to perform the check.
> 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.
5. After a short time, all of the trailer's lights will
start flashing again.
> The light check is completed.
STARTING AND DRIVING
Disabling the automatic check
The automatic light check can be disabled in the
center display.
Settings
1. Tap in the Top view.
2. Tap My Car Lights and Lighting.
3. Deselect Automatic Trailer Lamp Check
Manual check
If the automatic check has been disabled, the
check can be started manually.
1. Tap Settings in the Top view.
2. Tap My Car Lights and Lighting.
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. 440)
.
.
443
* Option/accessory.