Footbrake - Aston Martin DB 9 2013 Manual

Do not attempt to change gear position while in mechanical
limp home mode. If a gearshift request is detected at a speed
below 20 km/h the engine will stop and the parklock will come
ON.
At a speed above 20 km/h the request and any other
transmission request will be rejected and the vehicle will
continue in third or fifth gear.
If entering mechanical limp home mode in any position other than
auto drive or touchtronic mode the parklock will come ON (Refer to
'Parklock Override', page 11.21). Contact your Aston Martin Dealer.

Footbrake

The footbrake operates through a vacuum boosted, dual (diagonal
split) circuit, hydraulic system incorporating an Anti-lock Brake
System (ABS).
Warning: In the event of a brake failure bring the vehicle to a
halt as soon as it is safe to do so. Do not continue to drive.
If vacuum boost fails or one circuit fails the footbrake will still
operate but with greater pedal pressure, increased pedal travel
and longer stopping distances.
After a long drive over salted or gritted roads or if driving in
heavy rain, through water or a vehicle wash, the braking action
may be delayed and increased braking pressure may be required.
Vacuum boost is only available while the engine is running.
Ceramic Brake Discs
Warning: Track day use and high speed driving: For track use
or high speed driving new brake pads must be subject to specific
conditioning. Failure to correctly condition the pads may result
in greatly reduced brake performance. Contact you Aston Martin
Dealer.
Carbon ceramic brake systems combine low weight with high
performance, offering:
• Reduced unsprung weight (mass of components not supported by
the suspension) - improving vehicle handling.
• Improved rate of wear characteristics.
• Improved braking performance.
The rate of wear of the brake pads and discs will depend on
driving style and usage conditions. Track day usage will increase the
rate of wear of discs and pads.
Brake Warnings
Warning: If the brake warning symbol comes ON, you should
immediately be prepared for possible increased stopping
distances and possible partial failure of the braking system.
While driving, if the brake warning symbol
either that:
• The park brake is not fully released.
• The brake pads require regular maintenance.
• The brake fluid level has fallen below an acceptable level.
comes ON, it shows
5.9