BMW Diagnostic & Reprogramming


The Online Service System (OSS) has been developed specifically for independent automotive workshops to provide an extensive range of resources. The following applications are available in the OSS:


ISTA Diagnosis Application

Vehicle diagnostics from the Z3/E36, with the BMW ICOM, or with a J2534 pass-thru tool (from model year 1996).

  • Fault Code Diagnosis
  • Test Plans
  • Repair Instructions (E30 or higher)
  • Technical Data
  • Wiring diagrams


Web ISTA Information Application

WebISTA has been developed to provide an information only application for users that do not require all of the services included in the ISTA diagnostics application.

  • Repair Instructions (E30 or higher)
  • Technical Data
  • Tightening torques
  • Wiring diagrams


You can search using document title, document number and subject areas as the search criteria. The desired information is displayed by means of graphics and explanatory text.


ISTA/P Online – Control Module Reprogramming

With ISTA/P you can reprogram the onboard control modules that are capable of software reprogramming.  For ISTA/P, a data interface, a power supply and an Internet connection are required. The data interface can be a BMW Group ICOM interface or a “Pass-Thru Tool (PTT)” that fulfills the requirements of the SAE J2534 standard.


What is needed to diagnose and program with the BMW OSS?

The OSS consists of a desktop or laptop PC connected to BMW over the Internet. To connect to the vehicle you can use the BMW authorized diagnostic interface “integrated communication optical module (ICOM)” or use a J2534 “Pass Thru Tool (PTT)”.

[easyazon_cta align=”center” identifier=”B09SP8F2X6″ key=”small-light” locale=”US” tag=”bmwoemdtc-20″] CarDAQ-Plus 2 Diagnostic Code Reader and J2534 Programming Tool
[easyazon_cta align=”center” identifier=”B002YKCZF2″ key=”small-light” locale=”US” tag=”bmwoemdtc-20″] Drew Technologies (DRWCDPLUSKIT) CarDAQ-Plus J2534 Flash Reprogramming Kit
[easyazon_cta align=”center” identifier=”B006HV5N08″ key=”small-light” locale=”US” tag=”bmwoemdtc-20″] CarDAQ-M Modular PassThru J2534 Vehicle Reflash Hardware
[easyazon_cta align=”center” identifier=”B09SP8F2X6″ key=”small-light” locale=”US” tag=”bmwoemdtc-20″] MAXIFLASH PRO (ALT-MF2534)
[easyazon_cta align=”center” identifier=”B01C4JJWNU” key=”small-light” locale=”US” tag=”bmwoemdtc-20″] VSI J2534 ECU Reprogrammer & Diagnostic Adapter
[easyazon_cta align=”center” identifier=”B076919QL2″ key=”small-light” locale=”US” tag=”bmwoemdtc-20″] Dearborn d-Bridge Adapter J2534 OBDII Engineering Tool



Connection to OSS works only on PCs where no proxy connections are used.

For information about vehicle reprogramming and diagnostics using J2534 click here.



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