Volvo S70 Owner's Manual page 132

1999 S70 & V70
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 (automatic transmission) 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 not function
The power assist to the brakes functions only when the engine is running. When the car is moving
without the engine running the brake pedal pressure required to stop the car is increased by 3-4 times
and the brake pedal feels stiff.
pg. 81 Brake system (EBD), TRACS, STC
EBD (Electronic Brake-force Distribution)
EBD is an integrated part of the ABS system. EBD regulates the hydraulic pressure to the rear brakes to
help provide optimal braking capacity.
If the BRAKE and ABS warning lights come on at the same time, this could indicate a fault in the brake
system. If the brake fluid level is above the MIN mark, drive carefully to an authorized Volvo retailer
and have the brake system inspected.
WARNING!
If the fluid level is below the MIN mark in the reservoir, DO NOT DRIVE. Have the car towed to an
authorized Volvo retailer and have the brake system inspected.
TRAction Control System (TRACS) - option on certain models
TRACS is a system designed as an aid when starting/driving off if one of the drive wheels has poor
traction due to weather conditions or the road surface and is connected to the ABS control module.
TRACS engages automatically at speeds below 25 mph (40 km/h) when one of the drive wheels loses
traction. It disengages automatically when speed exceeds 25 mph (40 km/h). The sound which can be
heard when the system is operating comes from the ABS system.
TRACS can be disengaged manually using the switch on the dashboard
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(see page 25). The indicator