If the BRAKE and ABS warning lights comeon at the same time, this could indicate afault in the brake system.

If the BRAKE and ABS warning lights comeon at the same time, this could indicate afault in the brake system.  - Instrument panel - Instruments and controls - Volvo XC90 Owners Manual - Volvo XC90

Х Stop the vehicle in a suitable place and switch off the engine.
Х Restart the engine.
Х If both warning lights go off, no further action is required.
Х If both lights are still on after the engine has been restarted, switch off the engine again and check the brake fluid level (see page 218 for the location of the brake fluid reservoir).

If the brake fluid level is above the MIN mark, drive carefully to a trained and qualified Volvo service technician and have the brake system inspected.

WARNING
If the fluid level is below the MIN mark in the reservoir or if a Brake failure Ц Service urgent message is displayed in the text window: DO NOT DRIVE. Have the vehicle towed to a trained and qualified Volvo service technician and have the brake system inspected.

    See also:

    Function
    Location of the laser sensor in the windshield2 City SafetyЩ monitors traffic ahead of you using a laser sensor mounted in the upper section of the windshield. If a collision is imminent, City Sa ...

    Other voice control settings found in MY CAR
    Х Voice user setting: Two user profiles can be set by pressing MY CAR and going to Settings Voice settings Voice user setting. Select User 1 or User 2. Х Voice output volume: Press MY C ...

    Temporary spare
    The spare tire in your vehicle1 is called a "Temporary Spare". Recommended tire pressure (see the placard on the B-pillar or on the fuel filler door) should be maintained irrespective ...