When a dead battery concern is present, sleep mode must be achieved before further tests are performed. In order to complete the 20 minute lullaby, a soothing voice is not necessary, but a set of hands is. Remove the key, turn off the lights, shut the doors, and say goodnight. Take a sip of this sleepy time Real Fix and perform the proper tests while in sleep mode.
2001, Audi A6 Quattro, 2.8L
Dead Battery, Replaced Battery, Radio
The customer states the vehicle will not start.
Confirmed the customer’s concern and found the vehicle did not start. Performed a visual inspection of the charging system and battery, but found no apparent concerns. Removed the key from the vehicle and disconnected the battery negative cable. Connected a multi-meter between the battery negative cable end and the battery negative post, and waited twenty minutes for the vehicle’s modules to enter sleep mode. Used the multi-meter to measure the amperage and found the measured parasitic amperage draw was above the allowable specification. With the multi-meter still connected inline of the battery negative circuit, removed the fuses one by one and monitored the multi-meter measurement. Observed the amperage draw decreased greatly when the radio amplifier fuse was removed from the fuse box. Disconnected the radio connector, reinstalled the radio amplifier fuse and used the multi-meter to measure the amperage. Observed the measured parasitic amperage draw was below specifications. The tests indicated the radio circuit operated as designed and there was an internal fault in the vehicle’s radio.
Replaced the battery and radio, and verified the vehicle operated properly. The customer's concern did not return.
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