Safety Lockout Switch

1998 Audi A4 Avant Quattro, AutomaticSECTION Safety Lockout Switch

Remove safety lockout switch and disconnect harness connector. Check continuity between switch terminals with switch in appropriate position. See SAFETY LOCKOUT SWITCH TEST table. See Fig 1 . If continuity is not as specified, replace safety lockout switch.

SAFETY LOCKOUT SWITCH TEST

Switch Position Check Between Terminal No. Specification
Off
1 & 2 No Continuity
3 & 4 No Continuity
On
1 & 2 Continuity
3 & 4 Continuity
Fig 1: Identifying Safety Lockout Switch Terminals
G97I04219Courtesy of AUDI OF AMERICA, INC.
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.