FixVault

Horn: Check Function

WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2021 Audi S8, 2021 Audi A8 e Quattro, 2021 Audi A8 Quattro, 2020 Audi S8, and 2020 Audi A8 e Quattro. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION:

Risk of injury due to unintended engine start on high-voltage vehicles!

Procedure: 

-- Switch the ignition on.

-- Operate the horn and check the function of the high and low tone horn.

NOTE:

Perform the function test outside, for example at the workshop entrance or during a road test.