Audi A4: Start/Stop system
Description
Applies to: vehicles with Start/Stop system
The Start/Stop system can help increase fuel
economy and reduce CO2 emissions.
In Start/Stop mode, the engine shuts off automatically
when stopped, for example at a traffic
light. If certain conditions are met, the engine
may stop before the vehicle has come to a complete
stop. If you press the accelerator pedal
when this happens, the engine will start and driving
power will be transmitted.
The ignition and important assist systems such
as the brake booster will remain available during
the Stop phase. The engine will restart automatically
when needed.
The Start/Stop system is automatically activated
once the ignition is switched on.
Switching the Start/Stop system off and on
The button is located above the
selector lever
in the center console. The LED in the button
turns on when the function is switched off.
- Press to switch the system
on or off.
If you switch the system off during a Stop phase,
the engine will start again automatically.
Basic requirements
- The driver's door and the hood must be closed
and the driver's safety belt must be fastened.
- "P","N", or "D" must be engaged.
- The steering wheel must not be turned far in either
direction.
- The vehicle must have driven faster than 2 mph
(3 km/h) since the last time it stopped.
- The vehicle is not in trailer mode.
Note
Always switch the Start/Stop system off when
driving through water.
Tips
Stopping and starting the engine
Applies to: vehicles with Start/Stop system
- Press and hold the brake pedal until the vehicle
has stopped. The indicator
light appears in
the instrument cluster once the engine stops
automatically.
- The engine starts again when you remove your
foot from the brake pedal. The indicator light
turns off.
If the parking brake is set, the engine will only
start again when the accelerator pedal is pressed.
Tips
- Press the brake pedal during a Stop phase
to keep the vehicle from rolling.
- The ignition will turn off if you press the
START ENGINE STOP button during a Stop
phase.
- If you leave the vehicle briefly during a Stop
phase and then enter again, the driver's
door must be closed and the safety belt
must be fastened in order for the engine to
be able to restart.
- You can control if the engine will stop or not
by reducing or increasing the amount of
force you use to press the brake pedal. For
example, if you only lightly press on the
brake pedal in stop-and-go traffic or when
turning, the engine will not switch off when
the vehicle is stationary. If you press the
brake pedal harder, the engine will switch
off.
Starting and stopping the engine automatically
Applies to: vehicles with Start/Stop system
The system checks if certain conditions are met
before and during the Stop phase, and determines
if the engine stops and how long it remains
stopped. For example, if power usage is
high, the engine will not be stopped. Along with
other conditions, the following factors influence
the automatic engine start or stop:
- Environmental conditions (slopes, inclines, elevation,
temperature)
- Battery (charge status, temperature, power usage)
- Engine temperature
- Assist systems
- Driving behavior
Depending on the engine, the
indicator light
may appear if the engine is not stopped.
Messages
Applies to: vehicles with Start/Stop system
The following messages may appear depending
on the vehicle equipment:
Drive system: please start the vehicle manually
This message appears when specific conditions
are not met during a Stop phase. The Start/Stop
system will not be able to restart the engine. The
engine must be started with the
START ENGINE STOP button.
Vehicle starting system: malfunction! Please
contact Service
There is a malfunction in the Start/Stop system.
Drive the vehicle to an authorized Audi dealer or
authorized Service Facility as soon as possible to
have the malfunction corrected.
READ NEXT:
General information
You can apply the vehicle's brakes using the brake
pedal.
Operating noise
Noises may occur when braking depending on the
speed, braking force, and outside conditions such
as temper
Operating the parking brake
The electromechanical parking brake is used to
secure the vehicle from rolling away unintentionally.
The switch is located under the
selector lever
in the center console
Driving uphill and downhill
When driving uphill, downhill, or at high altitudes,
note the following information:
Drive slowly and carefully.
Do not try to turn around if you cannot safely
drive on
SEE MORE:
There may be different media sources and connections
available depending on the vehicle
equipment. For example, you can play media files
using a connected USB drive or connect your mobile
devices to the Audi music interface and operate
them through the MMI.
Media and format restrictions: the MMI (in
Special tools and workshop equipment required
Puller - Clutch Module -T40176-
Clutch Disc Shaft Spline Lubricant -G 000 100-
Sealing Grease. Refer to the Parts Catalog.
Removing
Note
There is a normal "clicking" in
the dual mass flywheel with "LuK" centrifugal pendulum absorber
-A-.