Audi A4: Motor compartment
General information
Special care is required if you are working in the
motor compartment
For work in the motor compartment, such as
checking and filling fluids, there is a risk of injury,
scalding, accidents, and burns. For this
reason, follow all the warnings and general
safety precautions provided in the following information.
The vehicle's motor compartment is
a dangerous area.
Explanation of warning symbols:
Hot motor components!
Rotating parts!
The radiator fan can switch on at
any time!
High voltage! Switch off the
engine before coming into contact with any ignition
system components!
The catalytic converter can be
damaged the oil level is too high!
Hot coolant - there is a risk of
scalding!
Always follow the instructions in
the operating manual.
WARNING
- Turn the engine off.
- Switch the ignition off.
- Set the parking brake.
- Select the "P" (Park) selector lever position.
- Allow the engine to cool.
- Keep children away from the motor compartment.
- Never spill fluids on a hot engine. These fluids
(such as the freeze protection contained
in the coolant) can catch fire.
- Avoid short circuits in the electrical system.
- Never reach into the radiator fan. The fan is
temperature-controlled and can turn on
suddenly, even when the ignition is switched
off.
- Never open the hood when there is steam or
coolant escaping from the motor compartment,
because there is a risk that you could
be burned. Wait until no steam or coolant is
escaping.
- The cap on the coolant expansion tank must
never be opened when the coolant is hot.
The cooling system is under pressure. There
is a risk of burns
- To protect your face, hands, and arms from
hot steam or coolant, cover the cap with a
thick cloth when opening.
- Do not remove the engine cover under any
circumstances. This increases the risk of
burns.
- Due to the risk of electric shock, never touch
the ignition cable or other components in
the electronic high-voltage ignition system
when the engine is running or is starting.
- If a gear is engaged while the vehicle is stationary
and the engine is running, do not
press the accelerator pedal inadvertently.
Pressing the accelerator pedal will cause the
vehicle to move, and this could result in an
accident.
- If inspections or repairs must be performed
while the engine is running, moving components
(such as the ribbed belt, generator,
and radiator fan) pose an additional risk.
- Set the parking brake first and select the
"p" (Park) selector lever position.
- Always make sure that no parts of the
body, jewelry, ties, loose clothing, and
long hair can be caught in moving engine
components. Before any work, always remove
any jewelry and/or ties, tie back long
hair, and make sure all clothing fits close
to the body to reduce the risk of anything
becoming caught in engine components.
- Pay attention to the following warnings listed
when work on the fuel system or on the
electrical equipment is required.
- Do not smoke.
- Never work near open flames.
- Always have a working fire extinguisher
nearby.
- All work on the battery or electrical system
in your vehicle can result in injuries, chemical
burns, accidents, or burns. Because of
this, all work must be performed only by an
authorized Audi dealer or authorized Audi
Service Facility.
- Limit your exposure to exhaust and chemicals
to as short a time as possible.
WARNING
California Proposition 65 Warning:
Note
When filling fluids, be sure not to add any fluids
to the wrong reservoirs. Otherwise severe
malfunctions and engine damage will occur.
For the sake of the environment
You should regularly check the ground under
your vehicle in order to detect leaks quickly. If
there are visible spots from oil or other fluids,
bring your vehicle to an authorized Audi dealer
or authorized Audi Service Facility to be
checked.
Opening and closing the hood
The hood is released from inside the vehicle.
Fig. 156 Footwell: release level
Fig. 157 Unlocked hood: lever
Observe the safety precautions General
information.
Make sure the wiper arms are not raised up from
the windshield. Otherwise the paint could be
damaged.
Opening the hood
- With the door open, pull the lever
below
the instrument panel in the direction of the arrow
> fig. 156.
- Raise the hood slightly.
- Press the lever > fig. 157 in the direction of the
arrow. This releases the hooks.
- Open the hood.
Closing the hood
- Push the hood down until you override the
force of the struts.
- Let the hood fall lightly into the latch. Do not
press it in.
Messages
The following messages may appear depending
on the vehicle equipment:
warning! Hood is not locked.
Stop vehicle
and check the lock
The hood latch is not locked correctly. Stop immediately
and close the hood.
WARNING
- Never open the hood when there is steam or
coolant escaping from the motor compartment,
because there is a risk that you could
be burned. Wait until no steam or coolant is
escaping.
- For safety reasons, the hood must always be
latched securely while driving. Because of
this, always check the hood after closing it
to make sure it is latched correctly. The
hood is latched if the front corners cannot
be lifted.
- If you notice that the hood is not latched
while you are driving, stop immediately and
close it, because driving when the hood is
not latched increases the risk of an accident.
Motor compartment overview
The most important check points.
Fig. 158 Engine compartment overview: diagram
Observe the safety precautions General information.
- Washer fluid reservoir ()
- Jump start points: (+) under the cover, Charging the 12 volt vehicle
battery, Jump starting
- Engine oil filler opening ()
- Sticker* for engine oil specifications
- Coolant expansion tank ()
- Brake fluid reservoir ()
The coolant expansion tank and the engine oil filling opening may be located
in different places within the engine compartment, depending on the engine
version.
READ NEXT:
If the engine oil level too low
If you need to add engine oil, use an oil that is listed on the sticker. The
sticker is located at the front of the engine compartment fig. 158. When using
the engine
Coolant
The engine cooling system is filled with a mixture
of purified water and coolant additive at the factory.
This coolant must not be not changed.
The coolant level is monitored using the
indi
Fig. 161 Motor compartment: cap on brake fluid reservoir
Observe the safety precautions General
information.
Checking the brake fluid level
The brake fluid reservoir is located under a cover
on the d
SEE MORE:
Text messages
Applies to: vehicles with telephone
Requirement: your mobile device must be connected
to the MMI via Bluetooth Message Access
Profile (Bluetooth MAP).
Applies to: MMI: Select on the home screen:
MESSAGES > () > e-mail (phone
1)/e-mail
(phone 2)*.
The following functions ar
Overview
Fig. 150 Center display: left side: playback view of radio functions, right
side: sources
Operating
Applies to: MMI: To open the playback view (1),
select on the home screen: RADIO > Source > a
category > a station/podcast*.
Applies to: MMI: To open the sources (2), select