Removing and installing rear left vehicle level sender G76 and rear right vehicle level sender G77 — AUDI

Removing and installing
rear left vehicle level sender
G76
and
rear right vehicle level sender
G77
General notes:
Vehicles with adaptive suspension and/or gas discharge lamps have automatic headlight range control fitted as standard equipment
Rep. gr.
94
.
The adaptive suspension and the automatic headlight range control functions require information on the compression and rebound travel at the front and rear suspension.
For this purpose, the position of the front upper suspension link (left/right) in relation to the body is transferred to the
rear left vehicle level sender
G76
and the
rear right vehicle level sender
G77
via a coupling rod. The senders then transmit electrical signals to the
gas discharge light control unit (left/right)
J343/344
.
Servicing
left/right gas discharge bulb control unit
J343/344
Rep. gr.
94
On the front axle these signals are sent by the
front left vehicle level sender
G78
and
front right vehicle level sender
G289
to the
gas discharge light control units (left/right)
J343/344
.
These signals are required for calculating the current attitude of the vehicle.
The automatic headlight range control reacts to changes in the suspension height (attitude of the vehicle).
The following situations may produce a change in the suspension height:
Towing a trailer/caravan
Different loads (vehicle unladen, partly laden or fully laden)
1
WARNING
Headlight setting; setting of adaptive suspension!
The reference position (default setting) of the suspension must always be adapted and the basic headlight setting must always be checked when:
The front upper suspension link has been removed and installed or renewed,
Work has been performed on the vehicle level sender,
Vehicle level sender has been renewed,
Bolt connection of coupling rod for
vehicle level sender
has been detached at front upper suspension link
Re-adapting reference position
Chapter
Basic setting of headlights
Rep. gr.
94
Removing
Vehicles with air suspension: put vehicle on lifting platform
Chapter
.
Unplug connector
3
.
Remove nut
2
.
Unscrew bolts
1
with angled spanner. Take care not to bend upper retaining plate.
Take out vehicle level sender.
Installing
Installation is carried out in the reverse sequence. Note the following points:
Lever of sender must face outwards.
Tightening torques
Chapter
Vehicles with air suspension: stand vehicle on its wheels
Chapter
.
Vehicles with air suspension: re-adapt reference position
Chapter
.
Perform basic setting of headlights
Rep. gr.
94
.