Defogger Inoperative - Rear Window (With RPO E52)

Diagnostic Chart (Part 1 Of 3):

Diagnostic Chart (Part 2 Of 3):

Diagnostic Chart (Part 3 Of 3):

TEST DESCRIPTION
The number(s) below refer to the step number(s) on the diagnostic table.
8. Listen for an audible click when the rear window defogger relay operates. Command both the ON and OFF states of the rear window defogger relay. Repeat the commands as necessary.