2021 AUDI E-TRON check engine

4KE012721BF
Quick access



— Audi musicinterface .......... 217
— Audi phone box ............... 177
Socket wz zs sews x 2 uews yo ees sve 78
@ Electromechanical parking brake
BUEtON sgsae «2 came o 2 eawa xo ees 2 98
@0 Selector lever ..............02. 92
@) [START STOP] button ............ 90
@ Steering wheel adjustment ...... 62
@) Lever for:
— Cruise control system ......... 141
— Adaptive cruise assist .......... 144
@4 Connection port for the On Board
Diagnostic System (OBD) ........ 281
@) Hood release ..............00-5 234
@8 Memory function buttons ........ 67
@) Buttons for:
SsLIQWtS | cove & & sonsaws o o amavors & & imamwas 9 0 48
—All-weather lights ............ 48
@8
Luggage compartment lid button . 39
@9 Exterior mirror adjustment ...... 52
60 Buttons for:
— Power windows .............. 43
—Child safety lock .............. 42
() Tips
Some the equipment listed here is only instal-
led in certain models or is available as an op-
tion.
Indicator lights overview
The indicator lights in the instrument cluster
blink or turn on. They indicate functions or mal-
functions. Some warning and indicator lights
turn on when you switch the ignition on and must
turn off when the drive system is switched on or
while driving.
With some indicator lights, messages may ap-
pear and warning signals may sound. The indica-
tor lights and messages may be covered by other
displays. To show them again, select the second
tab for messages with the multifunction steering
wheel > page 12.
Some indicator lights in the display can display in
several colors.
A\ Central indicator light
If the A or indicator light turns on, check
the message in the instrument cluster.
The following indicator lights may be available,
depending on the vehicle equipment:

Red indicator lights
Central indicator light
=> page 7,
Instrument cluster
=> page 11
Safety belt
=> page 66
Engine start system
=> page 91
Transmission
=>page 94
Drive system
=> page 96,
Electrical system
=> page 237
Charging system
=>page 117
Electromechanical parking brake
=> page 98
Electromechanical parking brake
=> page 100
Brake system
=> page 97, > page 100,
=> page 236
Brake system
=> page 97, > page 100,
=> page 236
Steering
=> page 104
Steering lock
=> page 104

4KE012721BF
Checking and Filling

Checking and Filling
Motor compartment
(eT e @eleurlsela)
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 in-
jury, scalding, accidents, and burns. For this
reason, follow all the warnings and general
safety precautions provided in the following in-
formation. The vehicle's motor compartment is
a dangerous area. > /\.
Explanation of warnings (sticker in the motor
compartment):
©
Bs
Ay
Always follow the instructions in the op-
OA erating manual.

Hot motor components!
Rotating parts!

The radiator fan can switch on at any
time!

High voltage! The voltage in the high-
voltage system is high enough to cause
fatal injuries. Touching a damaged high-
voltage component can result in a fatal
electric shock.



— The coolant expansion tank cap is equipped
with a seal that must never be removed un-
der any circumstances > page 236. If the
coolant expansion tank is not sealed, con-
tact an authorized Audi dealer or authorized
Audi Service Facility.
— The cap on the coolant expansion tank must
never be opened when the coolant is hot.
The cooling system is under pressure.
—To protect your face, hands, and arms from
hot steam or coolant, cover the cap with a
thick cloth when opening.
— All work on the battery or electrical system
in your vehicle can result in injuries, chemi-
cal 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 chemicals to as short
atime as possible.


Z\ WARNING
— Switch the ignition off.
— Set the parking brake.
— Select the “P” (Park) selector lever position.
— Keep children away from the motor com-
partment.
— Never spill operating fluids in the motor
compartment.
— Avoid short circuits in the electrical system.
— Never open the hood when there is steam or
coolant escaping from the motor compart-
ment, 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 may
only be opened by an authorized Audi dealer

ZA WARNING
The voltage in the high-voltage system is high
enough to cause fatal injuries. Touching a
damaged high-voltage component can result
in a fatal electric shock. The components in
the high-voltage system are marked with a
warning label which warns of the high-volt-
age.
— The voltage level in the high-voltage system
is still dangerous and potentially life-threat-
ening when the ignition is switched off.
— Never perform work on orange high-voltage
cables or on high-voltage components. Only
authorized repair facilities that are certified
may perform work on the high-voltage sys-
tem.


or authorized Audi Service Facility.


Z\ WARNING
California Proposition 65 Warning:
— Engine exhaust, some of its constituents,
and certain vehicle components contain or
emit chemicals known to the State of Cali-
fornia to cause cancer and birth defects and
reproductive harm. In addition, certain flu-
ids contained in vehicles and certain prod-
ucts of component wear contain or emit

233

4KE012721BF
Checking and Filling

Col kel mel nator Tadnat-lal ae) lav (7
The most important check points.




Fig. 151 Reservoir locations
Observe the safety precautions > page 233, Gen-
eral information.
@ Washer fluid reservoir (>) > page 239
@ Coolant expansion tank (-£) under a cover
=> page 236
@® Brake fluid reservoir (O) under a cover
=> page 236
Cooling system
The cooling system is filled with a mixture of pu-
rified water and coolant additive at the factory.
This coolant must not be not changed.
The coolant level is monitored using the BB indi-
cator light. However, you should occasionally
check the coolant level.

[RAZ-0572


Messages
| Turn off engine and check coolant level. See
owner's manual
The coolant level is too low.
Do not continue driving and switch the ignition
off. Add coolant. The vehicle must not be towed.
See an authorized Audi dealer or authorized Audi
Service Facility for assistance.
Electric drive: malfunction! Cooling system.
Please contact Service
There is a malfunction in the cooling system.
Drive to an authorized Audi dealer or authorized
Audi Service Facility immediately.
©) Note
Before winter weather begins, have an author-
ized Audi dealer or authorized Audi Service
Facility check if the coolant additive in your
vehicle matches the percentage appropriate
235
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