Audi TT (2007 year). Manual - part 273

Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not 
 permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability 
     with respect to the correctness of information in this document. Copyright by AUDI AG.

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3

3

2

1

4

4

6

6

5

7

7

8

Oil pressure side

Oil return line

Control pressure

Intake side

Convertible top closing cycle

When closing the convertible top, the hydraulic 
pump turns anticlockwise and the two-way valve 
now closes on the opposite side. The hydraulic 
pressure flows through the check valve to the 
hydraulic cylinder beneath the piston rod and 
pushes the piston rod upwards, closing the 
convertible top.
At the same time, pilot pressure is applied to the 
pressure-controlled check valve on the pressureless 
side through a bypass port from the pressure side.

If the convertible top switch is still being actuated 
when the convertible top reaches its end position, 
the hydraulic pressure continues rising to a 
maximum of approx. 160 bar. 
A spring loaded valve opens and the excess 
hydraulic pressure flows back into the oil tank.

Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not 
 permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability 
     with respect to the correctness of information in this document. Copyright by AUDI AG.

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Convenience electronics

Windbreak switch, Cabrio E278

Windbreak

A windbreak is available as optional equipment for the Audi TT Roadster. The windbreak is located between 
the two roll bars and the convertible top box and can be raised and lowered electrically. 
Its task is to reduce air movement inside the occupant cell in order to enhance driving comfort.

Operating the windbreak

The windbreak can be raised and lowered by the 
driver using the windbreak operation switch. 
Switch E278 is located in the centre console below 
the convertible top operating switch E137. 
The switch must remain actuated throughout the 
windbreak lowering and raising cycle. An automatic 
cycle is not available for this function.

Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not 
 permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability 
     with respect to the correctness of information in this document. Copyright by AUDI AG.

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Note

Diagnostics:
There is no control unit between the 
sensor and actuator (DC motor). This task is 
performed by two relays. No diagnosis is 
given for this reason. Hence, no entries 
are made in the fault memory in the event 
of a fault. 
Consequently, no data blocks, adapta-
tions, codings or final control diagnostics 
are available this function in the diagnostic 
tester.

Electrical function

The "electrical windbreak operation" function is 
implemented by an illuminated button with two 
relays and a DC motor.
The button can be moved into the "Up" and "Down" 
positions by the driver.
Depending on operation, the button closes one of 
the two control current circuits of the relays, which 
thereupon close the load circuit and energise 
windbreak motor, Cabrio V186.

The two relays are mounted on a relay carrier above 
the onboard power supply control unit, which is 
located in the footwell at the front left. They can be 
replaced separately.

Legend:

E278

Windbreak switch, Cabrio

V186

Windbreak motor, Cabrio

Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not 
 permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability 
     with respect to the correctness of information in this document. Copyright by AUDI AG.

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Suspension system

Overview

The running gear is basically identical to that of the 
Audi TT Coupé, except for the modifications shown.

Front and rear axle damper set-ups 
for front-wheel drive and quattro drive

Front and rear axle suspension set-ups
for quattro four-wheel drive

Set-up of suspension strut bearing 
for front-wheel drive and quattro drive

Steel axle carrier for quattro four-wheel drive, 
to be introduced in the Roadster and in the TT Coupé

 

Axle carrier for front-wheel drive 
Part adopted from VW EOS, rigidly bolted