Brake booster
The brake booster uses engine manifold vacuum to assist braking force. Do not turn off the engine while driving because that will turn off the brake booster, resulting in poor braking power.
The brakes will continue to work even when the brake booster completely stops functioning. If this happens, however, you will have to push the pedal much harder than normal and the braking distance will increase.
See also:
Vehicle Dynamics Control warning light/Vehicle Dynamics Control OFF
indicator light/Traction Control OFF indicator light (STI)
This warning light has both the function of indicating malfunctions in the Vehicle Dynamics Control system and the function of indicating that the Vehicle Dynamics Control system has been deactivate ...
New Chassis Tuning for 2011
The Subaru Impreza WRX STI was already a highly optimized performance
machine. Specific chassis tuning. Aluminum front lower L-arms reduce unsprung
vehicle weight. Major chassis tuning changes inc ...
Trailer brakes
WARNING
● Adequate size trailer brakes are required when the trailer and its cargo exceed
1,000 lbs (453 kg) total weight.
● Do not directly connect your trailer’s hydraulic brake syst ...