Scania BMU DTC 4185 Pre-charge contactor's service life nearly ended

BMU Battery Management Unit · Scania

Code 4185 (decimal). Some diagnostic tools show it in hexadecimal as 001059.

In short

The service life counter for the contactor has reached its warning level.

Applies to: BMU7 (BMUA)BMU7 (BMUB)BMU7 (BMUC)BMU7 (BMUD)BMU7 (BMUE)BMU7 (BMUF)BMU7 (BMUG)BMU7 (BMUH)BMU7 (BMUI)BMU7 (BMUJ)BMU7 (BMUK)BMU7 (BMUL)BMU7 (BMUM)BMU7 (BMUN)BMU7 (BMUO)BMU7 (BMUP)

What does Scania BMU fault code 4185 mean?

What causes Scania DTC 4185?

How to fix Scania BMU fault code 4185?

Read the full explanation with Premium

Causes, system reaction, symptoms and step-by-step repair instructions for every fault code are available to Premium members.

  • Full explanations of every code and brand
  • Causes, symptoms and repair steps
  • New brands and codes included

Yearly plan: pay 10 months, get 12. Cancel at any time.

This information is for guidance only. Always follow the manufacturer workshop manual and safety procedures; if in doubt, contact an authorised workshop.

Code 4185 in other Scania systems

Compare code 4185 in every system →