Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

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HOMESERVICE MANUALSBMW1999328I 4D SEDAN, STANDARDREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCESYSTEMENGINE PERFORMANCE - OVERVIEWENGINE MANAGEMENT SYSTEMSSIEMENS MS 43.0 ENGINE CONTROL SYSTEMDM-TL (DIAGNOSIS MODULE - TANK LEAKAGE)NOTES

1999 BMW 328i 4D Sedan, Standard

DM-TL (Diagnosis Module - Tank Leakage): Notes

1999 BMW 328i 4D Sedan, StandardSECTION Notes

The M54 engine with the Siemens MS43.0 engine control system uses the DMTL system for fuel system leakage monitoring. The pump is manufactured by Bosch for use with the Siemens control system.

Fig 1: Identifying Diagnosis Module - Tank Leakage (DT-ML)

Courtesy of BMW OF NORTH AMERICA, INC.

RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.
• Brakes feel soft, pull hard to one side, or make grinding noises.
• The engine overheats, stalls repeatedly, or misfires under load.
• You are missing required tools, torque specs, or safe lifting equipment.
• You are not confident in the next step or safety outcome.