Servotronic, servicing

For vehicles with servotronic, the power steering contribution is electronically regulated according to vehicle speed.
If electronics fail, steering works like a traditional power steering.
Relay for servotronic control module -J236- is not On Board Diagnostic (OBD) capable.

Fig 1: Servotronic Symptom Diagnosis Chart

Courtesy of AUDI OF AMERICA, INC.