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MSD85 and MSD85.1 Repair

MSD85 and MSD85.1 Engine computer Unit (ECU)

Engine computer Units (ECU) Siemens MSD85 and MSD85.1 are used to control

  • N63B44 (N63B44O0)

  • N63TU aka N63B44TU (N63B44O1)

  • S63 (S63B44O0)

  • S63TU (S63B44T0 )

This Siemens MSD85 and MSD85.1 are used for N63 Engines in

  • BMW 550i F10/F11

  • BMW 650i F12/F13

  • BMW 750i/750Li F01/F02

  • BMW X5 F15

  • BMW X6 F16

  • BMW 550i GT F07

  • BMW X5 E70

  • BMW X6 E71
     

Also, Siemens MSD85 and MSD85.1 are used

for S63 Engines in

  • BMW M5 F10

  • BMW M6 F13

  • BMW X5M F85

  • BMW X6M F86

  • BMW X5M E70

  • BMW X6M E71

Problem with MSD85 and MSD85.1

MSD85 and MSD85.1 are known for internal failure that causes disturbing BSD (Bit Serial Data) communication.

BSD is a bit serial data interface is a single-wire data bus with a data transfer rate of 1.2 kBd. It's 12V signal level, 830uS = 1200 baud.

When it happens DME loses communication with alternator, oil level sensor and other modules on BSD Bus. Therefore it is not possible to measure oil level and alternator does not charge battery anymore.

Codes for F series are:

00278D  - BSD, Alternator : Missing 

CD9304 - BSD Data bus communication fault

210901 - BSD, Message; Alternator; Missing

213901 - Power management: reduction or deactivation of individual electrical loads/consumers

After Failure, only way to fix it was to replace DME, that's what dealer offers, and cost is around $2200

SOLUTION

We offer repairing internal failure of MSD85 and MSD85.1

HOW it is done

  • You will need to send us DME

  • We fix the DME whether its MSD85 or MSD85.1 and send back.

  • Turnaround time is either same day or next business day.

Feel free to ask if you have any questions.

Please place order in Shop Section

List of Supported part numbers:

If your part number is not listed here, please send us message and we will double check

12 14 7 588 186 (7588186)

12 14 7 593 560 (7593560)

12 14 7 593 708 (7593708)

12 14 7 593 929 (7593929)

12 14 7 594 355 (7594355)

12 14 7 600 124 (7600124)

12 14 7 601 359 (7601359)

12 14 7 602 171 (7602171)

12 14 7 604 356 (7604356)

12 14 7 607 985 (7607985)

12 14 7 608 194 (7608194)

12 14 7 608 712 (7608712)

12 14 7 612 802 (7612802)

12 14 7 613 202 (7613202)

12 14 7 621 329 (7621329)

12 14 7 624 036 (7624036)

12 14 7 633 374 (7633374)

12 14 7 637 532 (7637532)

12 14 7 639 217 (7639217)

12 14 7 640 087 (7640087)

12 14 7 643 746 (7643746)

12 14 7 644 075 (7644075)

12 14 7 645 143 (7645143)

12 14 7 649 411 (7649411)

12 14 8 603 842 (8603842)

12 14 8 610 680 (8610680)