11
Belt-on warning
The Audi TT Coupé ‘07 has a belt-on warning function for the driver.
The airbag control unit evaluates the information from the driver side belt switch E24 after ignition "on". If the
driver is not wearing a seat belt, a visual warning is given by the seat belt warning system warning lamp K19
integrated in the dash panel insert.If the system determines that the vehicle is moving, an audio warning is
given in addition to the visual warning.As long as the ignition is on, the airbag control unit monitors the
switched condition of seat belt switch E24. If seat belt status changes while terminal 15 is "on", the seat belt
reminder will be reactivated.
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Time diagram for seat belt reminder
Visual and audio signals
- Delayed seat belt fastening
Terminal 15
Road speed
Seat belt fastened
Seat belt warning system warning lamp
Audio signal
ON
OFF
V > 25 kph
v < 25 kph
yes
OFF
ON
OFF
No
ON
Time
Driver side belt switch E24
The "belt-on warning" function needs information
on whether the driver's seat belt is fastened or not.
Seat belt switch E24 in the belt buckle is
a mechanically actuated open-close switch.
The airbag control unit uses a resistance
measurement to establish whether the seat belt is
fastened or not.
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