Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.
Hydraulic fluid temperature: Fluid level specification:
Hydraulic fluid at operating
temperature (approx. 80°C)
Fluid level between MIN and MAX markings
The hydraulic fluid reservoir is located in the engine compartment.
Checking the hydraulic system for leaks is a repair measure and
should be charged separately.
Requirements:
• Engine switched off
• Bring front wheels into straight-ahead position.
Procedure:
– Unscrew filler cap with dipstick.
– Clean dipstick with a clean cloth.
– Screw cap on hand tight and unscrew again.
– Check fluid level according to scale on dipstick.
– If fluid level does not meet specification: Perform following
measures as appropriate:
Fluid level: Measure:
Above specified level Extract hydraulic fluid.
Below specified level Check hydraulic power steering system for leaks ⇒ Rep. gr. 48 ; Checking fluid
level, bleeding steering system and checking for leaks; Checking steering system
for leaks .
3.46.2 10-cylinder petrol engine, 12-cylinder
petrol engine and 8-cylinder diesel en‐
gine
Table of test values and procedure guidelines:
Hydraulic fluid temperature: Fluid level specification:
Ambient temperature (ap‐
prox. 20℃)
Fluid level close to MIN marking (up to 2 mm above or below marking)
Hydraulic fluid at operating
temperature (approx. 80°C)
Fluid level between MIN and MAX markings
The hydraulic fluid reservoir is located below the air cleaner hous‐
ing (left-side).
Checking the hydraulic system for leaks is a repair measure and
should be charged separately.
Requirements:
• Engine switched off
Audi A8 2003 ➤
Maintenance - Edition 06.2014
86 3. Maintenance