Brake System; Brake Circuit Malfunction - Volvo 850 User Manual

1994 Volvo 850
and can cause three-way catalytic converter or exhaust system overheating. This includes:
- Altering fuel injection settings or components.
- Adjusting distributor ignition timing beyond specified limits.
- Altering emission system components or location or removing components
- Repeated use of leaded fuel.
NOTE: Unleaded fuel is required for cars with three-way catalytic converters. A label on the instrument
panel and inside fuel tank filler door will remind owners and filling station attendants of this
requirement.
Important! It is unlawful to dispense leaded fuel into any vehicle labeled "unleaded gasoline only".
* Only turbo models are equipped with two heated oxygen sensors.
pg. 4:16 Brake system

Brake circuit malfunction

If one of the brake circuits should malfunction, the red warning light will come on, the pedal stroke
increases slightly, the pedal feels softer and extra pressure is required for normal braking. If the light
comes on while driving or braking, stop immediately and check the brake fluid level in the reservoir.
WARNING! If the fluid level is below the MIN mark in either section of the reservoir: DO NOT
DRIVE. Tow the car to a Volvo retailer and have the brake system checked and repaired.
Anti-lock Brake System (ABS)
If the warning lamp lights up there is 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.
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