Description

BMW M52T TU, M73 TU 1999 Training Manual – Shop-Grade Documentation

You’re chasing a coolant leak on a 1999 BMW 750iL with the M73 TU. The aftermarket book says “drain coolant and remove radiator” but says nothing about the water-cooled generator alignment or the two-battery system. That’s when you need the real thing: the BMW M52T TU, M73 TU 1999 Training Manual. I’ve been spinning wrenches for 28 years, and I’ll tell you flat out – skipping this document means you’re guessing on VANOS timing and cooling system bleed procedures.

This is not a reprint or a third-party mashup. It’s the same 159-page training book BMW gave to dealer techs during the 1999 model update. OEM every page. No generic wiring diagrams, no “typical” torque values. If you work on these engines – M52T TU, M62 TU, M73 TU – this manual is your bench reference.

VANOS and DME ME7.2: New Engine Management

Page 16 gets into VANOS operation for the M62 TU. The DME ME7.2 section starts on page 30 and includes the fold-out IPO diagram (page 31), the electric throttle system (EML) functional description, and the new CAN bus topology shared between ME7.2 and M5.2.1. If you’ve ever had a no-start on a 1999 528i because the EML adaptation didn’t sync, you’ll appreciate the step-by-step control logic here. The manual explains the input signals and output functions – not just “check wiring.”

How Does the Manual Cover the Cooling System?

It’s the M73 TU & M62 TU Cooling Systems chapter on page 70. That section covers the water-cooled generator (F-alternator) on page 73. The generator in these cars has coolant running through it – get the wrong hose orientation and you’ll cook a $600 alternator. Training manual gives you the flow direction, the bleed sequence, and the torque on the generator bracket bolts. I’ve seen techs skip this and end up with a fried electrical system. Don’t be that guy.

7 Key Systems in One Training Manual

Here’s what else is packed into this 1999 document: M73 TU introduction with the E-CAT (electric catalytic converter) and 750iL two-battery system (page 54), the 1999 DSC system (Dynamic Stability Control – a major shift from earlier traction control), LCM III (light module), Xenon headlights with LWR auto-leveling, visual entry aid, passive safety system (SRS changes), SZM steering column module, and the 1999 model navigation system. Also includes the 5 Series sport wagon introduction – tailgate specifics and Electronic Height Control (EHC) for the rear suspension. That’s seven major systems, and every one has factory calibration data.

Get the Right Torque Specs for the V12

Need the M73 TU exhaust system torque? They’re in the M73 TU Introduction chapter (page 46). The VANOS unit bolts on the M62 TU? Page 16 lists the sequence and angles. Aftermarket manuals give you “tighten to spec” – this one tells you the exact tool (like the special camshaft alignment tool for VANOS) and the procedure to lock the engine at TDC. No guessing.

Emission Compliance and the 1999 Model Year

Starts on page 2 with the Emission Compliance Review. BMW’s 1999 drivetrain and emission program compliance section (page 11) details OBDII requirements and the changes from earlier models. This is critical if you’re in a state with emissions testing and need to confirm monitor readiness. The manual references the Automotive Industry Overview standards for that model year.

If you’re working on related BMWs, grab the BMW X5 2002 Training Manual – EHC2 Air Suspension & 4.6is Specs for air ride diagnostics. For the V10 in the E60 M5, the BMW S85B50 2004 Training Manual – OEM Specs for the V10 is the reference. And the twin-turbo N54? The BMW N54B3000 2009 Training Manual – Factory OEM Specs for Twin-Turbo covers direct injection and wastegate adaptation. For transmission-specific drivetrain details, the sport wagon tailgate section mentions electric/manual mechanisms; check Manual Transmission documentation for clutch and gearbox specs on these cars.

One more thing: The training manual format is different from a service manual. It explains why systems work, not just how to remove parts. That makes it invaluable when you hit a diagnostic wall – you trace the logic from the CAN bus topology (page 41) to the output control functions. You understand the system, then you fix it. That’s the difference between a parts-swapper and a technician.

FAQ

Does this cover the M62 TU engine?

Yes, pages 12–29 cover the M62 TU.

What about the cooling system for the M73 TU?

The cooling system section (page 70) specifically addresses the shared components between the M73 TU and M62 TU, including the water-cooled generator (page 73) and the two-battery system for the 750iL. You need this if you are diagnosing overheating on these V8 and V12 engines because the fan clutch and thermostat housing have specific bleed procedures that are not documented in any aftermarket guide. Without this manual, you risk air pockets and generator damage.

Stop wasting time on vague guides. Buy the real OEM document and work with factory data.

Access the Factory Manual – the 159-page PDF is ready to use on your tablet or print. No reprints, no third-party copies. Just BMW’s own training material.