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.
Automatic Determination
In order to determine which EPROM needs to be installed there is a special procedure that is executed as part of the "Exchange EPROM" process. The procedure will "automatically" determine the correct replacement EPROM or control module part number, based on the "Basic part number" and "Programmed part number" stored on the installed EPROM, if the EPROM is not damaged.
The procedure is run automatically if "YES" is selected for the answer to the question Is old EPROM still installed.
During the automatic determination process the tester compares the part numbers stored in the EPROM of the currently installed DME control module with a list of possible replacement part numbers contained in the program of the tester.
The comparison is done to determine if the tester can "recommend" a replacement EPROM or control module part number.
Use the Manual With the Right Hardware
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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.
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