Correction For Situation I
CORRECTION FOR SITUATION I[NEW] For E60, E61, E82, and E88 vehicles where the customer complains of "Long Cranking Time" and fault code 2FBF is stored in the DME with the SES illuminated, proceed as follows:
1. [NEW] Use the current ISTA diagnosis software (2.19 or higher).
2. [NEW] While observing the fuel pressure, activate the electric fuel pump for 20 seconds, using ISTA and the diagnostic query function (after the vehicle test, select Control unit tree; DME; Call ECU functions; Diagnostic query; and Low pressure fuel pump with activation).
3. [NEW] Immediately after electric pump activation, the pressure must reach at least 4.75 bars.
4. [NEW] If the minimum threshold of 4.75 bars was not reached, further diagnose the low-pressure system using test module B1214_DI KDR, Fuel Pressure Control (possibly defective electric fuel pump or fuel filter/pressure regulator).
5. If the minimum threshold of 4.75 bars was reached, reprogram the vehicle with ISTA/P 2.37.0 (or higher). The target integration levels should be:
E60/E61 - E060-10-03-501 or higher
E82/E88 - E89x-10-03-501 or higher.
6. After programming, readapting the DME by means of a short test drive is recommended:
^ Bring the engine to the normal operating temperature.
^ Drive the vehicle at a speed of between 50-60 mph and engine speeds of 2,000-3,000 rpm for approximately 3 minutes (use manual gear shifting, if needed).
^ Let the engine idle for approximately 5 minutes.
^ If possible, to confirm repair effectiveness, let the vehicle sit overnight and cold start it the next morning. Then let it idle for approximately 5 minutes.
For E89 (Z4) vehicles where the customer complains of "Long Cranking Time" and only the fault code 2FBF is stored in the DME with the SES illuminated, proceed as follows:
1. Install a calibrated manual fuel pressure gauge (e.g., P/N 83 30 0 491 260 pressure gauge from the K-L-Jetronic special tool kit P/N 83 30 0 491 259), connected with the three-way adapter tool 135,270, into the low-pressure fuel supply line as follows:
#1 - Three-way adapter tool; (135 270)
#2 - Pressure gauge P/N 83 30 0 491 260
2. [NEW] Use the current ISTA diagnosis software (2.19 or higher).
3. [NEW] While observing the fuel pressure on the gauge, activate the electric fuel pump for 20 seconds, using ISTA and the component activation function (after the vehicle test, select Control unit tree; DME; Call ECU functions; Component activation; and Fuel pump).
4. [NEW] Immediately after electric pump activation, the pressure read from the manual gauge must reach at least 4.75 bars.
5. [NEW] If the minimum threshold of 4.75 bars was not reached, further diagnose the low-pressure system using test module B1214_DI KDR, Fuel Pressure Control (possibly defective electric fuel pump or fuel filter/pressure regulator).
6. If the minimum threshold of 4.75 bars was reached, reprogram the vehicle with ISTA/P 2.37.0 (or higher). The target integration level should be E89x-10-03-501 or higher.
After programming, readapting the DME by means of a short test drive is recommended:
^ Bring the engine to the normal operating temperature.
^ Drive the vehicle at a speed of between 50-60 mph and engine speeds of 2,000-3,000 rpm for approximately 3 minutes (use manual gear shifting, if needed).
^ Let the engine idle for approximately 5 minutes.
^ If possible, to confirm repair effectiveness, let the vehicle sit overnight and cold start it the next morning. Then let it idle for approximately 5 minutes.
[NEW] For E90, E92, and E93 vehicles where the customer complains of "Long Cranking Time" and only the fault code 2FBF is stored in the DME with the SES illuminated, proceed as follows:
1. [NEW] Use the current ISTA diagnosis software (2.19 or higher).
2. [NEW] While observing the fuel pressure, activate the electric fuel pump for 20 seconds, using ISTA and the diagnostic query function (after the vehicle test, select Control unit tree; DME; Call ECU functions; Diagnostic query; and Low pressure fuel pump with activation).
3. [NEW] Immediately after electric pump activation, the pressure must reach at least 4.75 bars.
4. [NEW] If the minimum threshold of 4.75 bars was not reached, further diagnose the low-pressure system using test module B1214_DI KDR, Fuel Pressure Control (possibly defective electric fuel\ pump or fuel filter/pressure regulator).
5. If the minimum threshold of 4.75 bars was reached, reprogram the vehicle with ISTA/P 2.37.0 (or higher). The target integration level should be E89x-10-03-501 or higher.
6. After programming, check the DME programmed part number:
^ If the DME programmed number is 7611xxx or higher, then proceed to step # 8.
^ If the DME programmed number is lower than 7611xxx, replace the HDP pump using P/N 13 51 7 594 943, which incorporates the latest improvements to internal sealing. For the pump replacement procedure, refer to RA 13 51 017.
7. After HDP replacement, clear the adaptation values of the high-pressure flow control valve in the DME by selecting the path:
^ Activities / Service Functions
^ Drive
^ Motor Electronics
^ Adjustment Programs
^ Delete Adaptations / variants, and then Test plan
^ Reset the adaptive values.
8. After programming, readapting the DME by means of a short test drive is recommended:
^ Bring the engine to the normal operating temperature.
^ Drive the vehicle at a speed of between 50-60 mph and engine speeds of 2,000-3,000 rpm for approximately 3 minutes (use manual gear shifting, if needed).
^ Let the engine idle for approximately 5 minutes.
^ If possible, to confirm repair effectiveness, let the vehicle sit overnight and cold start it the next morning. Then let it idle for approximately 5 minutes.
[NEW] For E71 X6 vehicles where the customer complains of "Long Cranking Time" and only the fault code 2FBF is stored in the DME with the SES illuminated, proceed as follows:
1. [NEW] Use the current ISTA diagnosis software (2.19 or higher).
2. [NEW] While observing the fuel pressure, activate the electric fuel pump for 20 seconds, using ISTA and the diagnostic query function (after the vehicle test, select Control unit tree; DME; Call ECU functions; Diagnostic query; and Low pressure fuel pump with activation).
3. [NEW] Immediately after electric pump activation, the pressure must reach at least 4.75 bars.
4. [NEW] If the minimum threshold of 4.75 bars was not reached, further diagnose the low-pressure system using test module B1214_DI KDR, Fuel Pressure Control (possibly defective electric fuel pump or fuel filter/pressure regulator).
5. If the minimum threshold of 4.75 bars was reached, replace the HDP pump using P/N 13 51 7 594 943, which incorporates the latest improvements to internal sealing. For the pump replacement procedure, refer to RA 13 51 017.
6. After HDP replacement, clear the adaptation values of the high-pressure flow control valve in the DME by selecting the path:
^ Activities / Service Functions
^ Drive
^ Motor Electronics
^ Adjustment Programs
^ Delete Adaptations / variants, and then Test plan
^ Reset adaptive values.