Siemens MS42

Tool
Siemens MS42

Siemens MS42 OBD Protocol Release!

Dear Users,

Take full control over legendary late-90s Bavarian straight-six powerplants! We are thrilled to announce official support for the Siemens MS42 ECU via 100% OBD Normal Read (NR) on your AutoTuner Tool.

Powering the iconic BMW M52TU engine generation (Double VANOS), this release targets the thriving "Youngtimer" market.

⚡ Method: 100% OBD (Normal Read / Write)
Maximum workshop efficiency with zero ECU removal. Simply plug your Tool into the vehicle's diagnostic port, perform a real hardware read (Normal Read), and flash your custom file safely within minutes.

🚗 Supported BMW Lineup (M52TU Engines):

  • 3-Series (E46): 320i, 323i, 328i (1998+)
  • 5-Series (E39): 520i, 523i, 528i (1995+)
  • 7-Series (E38): 728i (1994+)
  • Z3: 2.0, 2.3, 2.8 (1995+)

Update your software today and elevate the driving dynamics of BMW's finest 6-cylinder classics!

The AT Team

Key Features

  • Type: Engine Control Unit (ECU) ⚙️
  • Mode: OBD NR 🔌
  • MCU: C167 (29F400) 🖥️
  • Read time: 1min 30sec ⏱️
  • Write time: 1min 30sec ⏱️
  • Checksums correction ✅

*The list may evolve over time.

Reading next

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Compatibility List

Brand manufacturer
  • All
  • Abarth
  • Alfa Romeo
  • Alpina
  • Alpine
  • Ariel
  • Artec
  • Artega
  • Aston Martin
  • Audi
  • BMW
  • BMW Motorrad
  • Bajaj
  • Benelli
  • Bentley
  • Borgward
  • Bugatti
  • Buick
  • CFMOTO
  • CFMOTO Quad
  • Cadillac
  • Can-Am
  • Case IH
  • Caterpillar
  • Changan
  • Chevrolet
  • Chrysler
  • Citroen
  • Cupra
  • DS
  • Dacia
  • Daewoo
  • Dallara
  • Deutz
  • Dodge
  • Dongfeng
  • Donkervoort
  • Doosan
  • Ducati
  • Fendt
  • Ferrari
  • Fiat
  • Ford
  • Ford (Trucks)
  • GMC
  • GWM
  • Geely
  • Genesis
  • Harley-Davidson
  • Hawtai
  • Hino
  • Holden
  • Honda
  • Hummer
  • Hyundai
  • Indian Motorcycle
  • Infiniti
  • Isuzu
  • Isuzu Truck
  • Iveco
  • JMC
  • Jaguar
  • Jeep
  • John Deere
  • KTM
  • KTM
  • Kawasaki
  • Kia
  • Kiden
  • Kubota
  • Kymco
  • LEVC
  • Lada
  • Lamborghini
  • Lamborghini
  • Lancia
  • Land-Rover
  • Lexus
  • Lincoln
  • Lindner
  • Loncin
  • Lotus
  • Lundberg
  • Lynk & Co
  • MG
  • Mahindra
  • Man
  • Man Trucks
  • Manitou
  • Maserati
  • Massey Ferguson
  • Maxus
  • Mazda
  • McLaren
  • Mercedes
  • Mini
  • Mitsubishi
  • Morgan
  • Mustang
  • New Holland
  • Nissan
  • Opel
  • PGO
  • Peugeot
  • Polaris
  • Polestar
  • Porsche
  • Renault
  • Renault (Trucks)
  • Rolls Royce
  • SM Sport
  • Saab
  • Same
  • Sea-doo
  • Seat
  • Secma
  • Segway
  • Ski-doo
  • Skoda
  • Smart
  • SsangYong
  • Steyr
  • Suzuki
  • Tata
  • Tecnoma
  • Toyota
  • Toyota
  • Vauxhall
  • Vinfast
  • Voge
  • Volkswagen
  • Volvo
  • Wiesmann
  • Yamaha
  • ZXAUTO
  • Zinoro
  • Zontes
ECU/TCU
  • All
  • Siemens MS42 (C167 (29F400))
Methods
  • All
  • Bench
  • Bench Beta
  • OBD unlock patch in bench
  • Bench after Mail-in Unlock
  • Boot
  • Boot Beta
  • Datalogs
  • Datalogs Beta
  • DTC
  • OBD
  • OBD Beta
  • OBD unlock patch in boot
  • OBD unlock patch in boot Beta
  • ECU password read in OBD
  • OBD after Mail-in Unlock
Vehicle type
  • All
  • Tractor
  • ATV
  • Boat
  • Car
  • Jetski
  • Moto
  • Truck
Brand manufacturer
Model
Engine
ECU/TCU
Methods

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