Electronic Brake Force Distribution (Ebd); Stability System; Traction Control - Tc - Volvo S40 2005 Owner's Manual

2005 Volvo S40
Keep constant pressure 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 the warning lamp lights up there is a malfunction of the ABS system (the standard braking system will
still function) and the vehicle should be driven cautiously to a Volvo retailer for inspection.
WARNING!
If the BRAKE and ABS warning symbols light at the same time, there may be a problem in the brake
system. If the brake fluid level is normal in these circumstances, drive carefully to the nearest Volvo
workshop to have the brake system checked.

Electronic Brake Force Distribution (EBD)

EBD is an integrated part of the ABS system. EBD regulates the hydraulic pressure to the rear brakes to
help provide optimal braking capacity.
pg. 113 Stability system

Stability system

The car is equipped with STC (Stability and Traction Control) or the optional DSTC (Dynamic Stability
and Traction Control). These systems consist of a number of functions, which are listed below.

Traction control - TC

This function is designed to help reduce wheel spin by transferring power from a drive wheel that begins
to lose traction to the wheel on the opposite side of the vehicle (on the same axle). TC monitors and
compares the rotational speed of the drive wheels. If one of the drive wheels shows a tendency to spin,
the difference in speed is immediately detected.
TC is most active at low speeds, and a pulsating sound will be audible when the system is regulating
wheel spin. This is quite normal.
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