Volvo 960 - Manual (Page 168)

1996 Volvo 960
Anti-lock Brake System - ABS
If the warning lamp lights up there si a malfunction of the ABS system (the standard braking system will
however function) and the vehicle should be driven to a Volvo retailer for inspection.
The Anti-lock Braking System (ABS) helps to improve vehicle control (stopping and steering) during
severe braking conditions by limiting brake lock-up. When the system "senses" impending lock-up,
braking pressure is automatically modulated in order to help prevent lockup, which could lead to a skid.
The system performs a self-diagnostic test when the vehicle is started and at 4 mph (6 km/h). The driver
may detect on pulsation of the brake pedal, which is normal. To obtain optimal effect from the ABS
system, constant pressure should be kept on the brake pedal while the system is modulating the brakes.
Do not pump the brake pedal.
The switching of the ABS modulator will be audible at this time.
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.
Moisture on brake discs and brake pads affects braking.
Driving in rain and slush or passing through an automatic car wash can cause water to collect on the
brake discs and pads. This will cause a delay in braking effect when the pedal is depressed. To avoid
such a delay when the brakes are needed, depress the pedal occasionally when driving through rain,
slush etc. This will remove the water from the brakes. Check that brake application feels normal. This
should also be done after washing or starting in very damp or cold weather.
Severe strain on the brake system
The brakes will be subject to severe strain when driving in mountains or hilly areas or towing. The speed
is usually low which means that the cooling of the brakes is less efficient than when driving on level
roads. To reduce the strain on the brakes it is advisable not to use the brakes excessively. Instead, shift
into a lower gear, position 3 or in some cases L, and let the engine help with the braking.
Do not forget that, if you are towing a trailer, the brakes will be subjected to greater load than is normal.
If the brake power-assist does function
The power assist to the brakes functions only when the engine is running. When the car is moving
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