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4.9L V8 S62RWDMANUALgasS62B50
1 active safety recall on this vehicle — view recalls
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U0313critical severityNetwork

Software Incompatibility With Restraints Control Module

on 2003 BMW M5 4.9L V8 S62 · RWD

What this code means

The restraints control module has software that is incompatible with other network modules. This can affect airbag and seatbelt safety systems.

Symptoms

  • Airbag warning light on
  • SRS system fault
  • Restraint system may be disabled

Common causes

  • Mismatched module software version
  • Module replaced without programming
  • Incomplete software update
  • Failed restraints control module

Diagnostic steps

  1. Verify software versions of all modules
  2. Compare to factory calibration
  3. Reflash module with correct software
  4. Clear codes and verify SRS operation

Other Network codes on this vehicle

🔧 Database maintained under the daily editorial review of Chris Hackleman · Master Technician · 20+ years. Spot an error? Use the Help link above — a human reads every report.
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