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Home >> BMW >> 2000 >> X5 >> Repair and Diagnosis >> Electrical >> Body Electrical >> Central Body Electronics (ZKE III) - Overview - E38, E39 & E53 >> Central Body Electronics (ZKE III) >> Workshop Hints >> LED Status (Keys Equipped With LED) >> FZV Key Test

FZV Key Test

Pressing the trunk release and lock buttons together activates the key test. If the battery and FZV key EEPROM are "OK", the LED will come ON for approximately 1 second.

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