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2000 BMW 528I
2.8L I6 M52•RWD•AUTOMATIC•gas•M52B28
1 active safety recall on this vehicle — view recalls
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Repairs0Labor495Torque3158Fluid8DTC1997Battery1Maintenance0Recalls1
P0590low severityPowertrain

Cruise Control Multi-Function Input B Circuit Stuck

on 2000 BMW 528i 2.8L I6 M52 · RWD

What this code means

The PCM detected the cruise control multi-function input B signal stuck in one state. A jammed switch or shorted circuit is likely the cause.

Symptoms

  • Cruise control won't respond
  • Stuck cruise functions
  • Warning light on

Common causes

  • Stuck cruise control switch
  • Shorted switch circuit
  • Damaged wiring or connector
  • Failed control module

Diagnostic steps

  1. Read codes and freeze-frame data
  2. Monitor cruise switch input signal
  3. Inspect switch and wiring for shorts
  4. Replace stuck switch or repair circuit
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