Touareg V8-4.2L (BHX) (2004)
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Approved battery charger.
Tip:
Additional copies of the "Update - Programming" CD (Literature Number W42TOUHSWU0050) may be ordered from the Volkswagen Technical
Literature Ordering Center or by calling from 8:00 a.m. to 8:00 p.m. EST Monday through Friday. The number can be dialed in both the United States
and Canada.
Vehicle requirements:
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Battery MUST have minimum no-load charge of 12.5V (failure to maintain voltage during update process can lead to ECM failure) (use an approved
battery charger to maintain battery voltage).
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VAS 5051: connected to vehicle and to 110V AC Power supply at all times during procedure.
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VAS 5052: connected to vehicle with battery voltage requirements met.
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Any appliances with high electromagnetic radiation (i.e. mobile phones) switched OFF
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No Stored DTC's, erase any stored DTCs (see Note after PRIOR to performing procedure to "Update - Programming" (flash) the ECM).
Note:
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Non-observance of the following points may lead to ECM failure!
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VAS 5051 or 5052 must always be connected to the approved power supply at the approved voltages. Under no circumstances should the power
supply be interrupted or the diagnostic connector unplugged during the flash procedure.
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Any appliances with high electromagnetic radiation (i.e. mobile phones) must be switched OFF.
"Update - Programming" (flashing) procedure, checking for update match
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Switch ignition ON.
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Switch VAS 5051/5052 ON and insert flash CD into CD drive as soon as start screen appears.
Tip:
You must return to the start screen before starting a new (flashing) session, otherwise the flashing CD will not be recognized by the tester.
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Select "Vehicle Self Diagnosis" mode.
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Select vehicle system "01-Engine electronics".
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Program checks software level.
If software level of ECM MATCHES level indicated by Flashing CD:
