differential AUDI A4 1997 B5 / 1.G Brakes Description Of Systems Workshop Manual

01-39

EDL

Electronic Differential Lock
The Electronic Differential Lock (EDL) is a
traction control aid for driving away from a
standstill. An electronically-controlled brake
application at the wheel that is spinning provides
a torque reaction point for the differential. This
enables the wheel with better traction to make
use of the engine power. EDL is effective in both
forward and reverse.
EDL is part of the basic configuration of vehicles
with All Wheel Drive (AWD). Although EDL only
regulates the front wheels on vehicles with Front
Wheel Drive (FWD), EDL regulates all four
wheels on vehicles with All Wheel Drive (AWD).
This makes it possible to eliminate the driver
operated mechanical differential lock.
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