Erroneous Electric Fan Function Fault Stored In The DME (SI B12 16 19)

ERRONEOUS ELECTRIC FAN FUNCTION FAULT STORED IN THE DME

SERVICE CAMPAIGN BULLETIN

SERVICE INFORMATION

This Service Information Bulletin (Revision 1) replaces SI B12 16 19 dated May 2019.

What's New  (Specific text highlighted):

• Correction
• Warranty Information was updated

Equipped with the B46O, B58M, or XB1H engine

MODEL

SITUATION

The following faults may be erroneously stored in the Digital Motor Electronics (DME):

Fault code:	Control module:	Fault code text:
1A2806	DME	Electric fan, function: limited operation
1A4007	DME	Electric fan, function: Operating mode implausible

And:

There is no  customer-facing vehicle symptom(s) or related check control message displayed.

CAUSE

A software error may cause these faults to be erroneously stored in the Digital Motor Electronics (DME).

CORRECTION

The faults may only  be considered erroneous if described as such in the following procedure.

In all other circumstances and conditions  , the faults should be regarded as real faults and diagnosed with ISTA as needed.

PROCEDURE

Read out the environmental conditions and time stamps for 1A4007 and 1A2806.

If both faults were stored simultaneously or  1A4007 was stored up to 15 seconds after fault 1A2806 and  the fault counter for each fault is 1, perform the following:

1. Delete the fault memory
2. Cycle the terminal status (ignition off, wait 30 seconds, ignition on)
3. Activate the electric fan with ISTA for one minute

   Path for electric fan activation:

   • Control unit functions
   • Component activation
   • General
   • Electric fan activation
4. Cycle the terminal status (ignition off, wait 30 seconds, ignition on)
5. Activate the electric fan a second time for one minute
6. If neither of the faults have returned, they should be regarded as an erroneous fault and should be ignored

WARRANTY INFORMATION

In conjunction with the ISTA diagnosis of un-related issue(s), covered under the terms of the BMW New Vehicle Limited Warranty for Passenger Cars and Light Trucks.

Defect Code:	1711119900	Electric fan Fault code stored in diagnosis fault code memory (no warning lamp)
Labor Operation	Description		Labor Allowance
61 00 006	Work time to delete the fault memory and evaluate the specified fault codes as outlined in the PROCEDURE section		4 FRU

Work time labor operation code 61 00 006 is not considered a Main labor operation; however since this is a standalone repair; it does require an individual punch time and an explanation on the repair order and in the claim comments section.