2009 Volvo XC90 Owner's Manual - Page 144

06 Starting and driving Brake system vehicle first reaches a speed of approximately 12 mph (20 km/h). The brake pedal will pulsate several times and a sound may be audible from the ABS control module. This is normal. To obtain optimal effect from the ABS system, constant pressure should be kept on the brake pedal. Do not pump the brake pedal. The switching of the ABS modulator will be audible and the brake pedal will pulsate during braking. Please be aware that ABS does not increase the absolute braking potential of the vehicle. While control will be enhanced, ABS will not shorten stopping distances on slippery surfaces. • If both warning lights go off, no further action is required. NOTE • 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 212 for the location of the brake fluid reservoir). • WARNING If the fluid level is below the MIN mark in the reservoir or if a Brake failure - 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. When the EBA system is activated, the brake pedal will go down and pressure in the brake system immediately increases to the maximum level. You must maintain full pressure on the brake pedal in order to utilize the system completely. There will be no braking effect if the pedal is released. EBA is automatically deactivated when the brake pedal is released. When the vehicle has been parked for some time, the brake pedal may sink more than usual when the engine is started. This is normal and the pedal will return to its usual position when it is released. • ABS with EBD (Electronic Brake Force Distribution) 06 • 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. EBD is an integrated part of the ABS system. EBD regulates the hydraulic pressure to the rear brakes to help provide optimal braking capacity. The brake pedal will pulsate during braking, which is normal. If the BRAKE and ABS warning lights come on at the same time, this could indicate a fault in the brake system. 1. Stop the vehicle in a suitable place and switch off the engine. 2. Restart the engine. Emergency Brake Assistance (EBA) The EBA function is designed to provide full brake effect immediately in the event of sudden, hard braking. The system is activated by the speed with which you depress the brake pedal. 144