Removing and installing front left vehicle level sender G78 and front right vehicle level sender G289 — AUDI

Removing and installing
front left vehicle level sender
G78
and
front right vehicle level sender
G289
General notes:
Vehicles with electronic damping control (Audi magnetic ride) and/or gas discharge headlights have automatic headlight range control fitted as standard equipment
Rep. gr.
94
.
The electronic damping control (Audi magnetic ride) 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 left/right wishbone in relation to the body is transferred to the
front left vehicle level sender
G78
and the
front right vehicle level sender
G289
via a coupling rod. The senders then transmit electrical signals to the
electronically controlled damping control unit
J250
and/or the
gas discharge light control units (left/right)
J343/344
.
Servicing
left/right gas discharge bulb control unit
J343/344
Rep. gr.
94
On the rear axle these signals are supplied by the
rear left vehicle level sender
G76
and
rear right vehicle level sender
G77
to the
electronically controlled damping control unit
J250
and/or 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)
Note
The basic headlight setting must always be checked and, on vehicles with electronic damping control (Audi magnetic ride), the reference position of the suspension must always be re-adapted in the following cases:
If work has been performed on the vehicle level sender,
If the wishbone has been removed and installed,
If bolted connections
3
or
5
have been slackened.
The vehicle level sender is only available as a replacement part complete with coupling rod and upper and lower retaining plates.
On vehicles with electronic damping control (Audi magnetic ride), re-adapt reference position
Vehicle diagnostic tester
.
Basic setting of headlights
Rep. gr.
94
Removing
Unplug connector
6
.
Remove hexagon nut
3
.
Remove hexagon bolt
5
.
Take out vehicle level sender
4
.
Installing
Installation is carried out in the reverse sequence. Note the following points:
Locating hook on coupling rod must engage on wishbone.
Lever of sender must face outwards.
Tightening torques
Chapter
“
Exploded view of subframe, diagonal strut, swivel joint, anti-roll bar, wishbone, suspension bracket and vehicle level senders
”
On vehicles with electronic damping control (Audi magnetic ride), re-adapt reference position
Vehicle diagnostic tester
.
Perform basic setting of headlights
Rep. gr.
94
.