Audi Check Coolant / Add Antifreeze DIY Guide

Audi Check Coolant / Add Antifreeze DIY Guide

In this guide, you will find instructions on how to check engine coolant on Audi vehicles and add coolant if the level is low. Always remove the coolant cap or add coolant after the engine has cooled down. Do not open the radiator or coolant expansion cap when the engine is still hot.


  • Engine Overheating,
  • Temperature gauge in the HIGH range,
  • Check Coolant Warning,
  • Low Engine Coolant Message

What you will need:


Open Hood

Park your Audi on a level surface. Wait for the engine to cool down. Once your engine has cooled down you can proceed by opening the hood. Pull the lever until you hear the hood pop open. Next, you need to release the hood safety latch at the front of your Audi.


Locate Coolant Reservoir

Next, you locate the coolant reservoir (tank) on your particular Audi. The engine coolant reservoir is shown as item 7 in the pictures above. On a the coolant reservoir is located on the driver or passenger side of the engine.

How to check coolant  Audi 8P EV B6 B6 B7 B8 C4 C5 C8 C7 D2 D3 D4


Check Coolant Level

Remove cap. Look at the coolant reservoir tank and note the low and high level.

check low coolant level A3, S3, RS3, A4, S4, A5, S5, A6, S6, A7, S7, RS7, A8, S8, Q3, Q5, SQ5, Q7, TT, R8


audi max and min coolant level


audi coolant reservoir

Coolant expansion tank on Audi A4 located on the passenger side of the engine. If the level is below the minimum mark you will need to add coolant or your Audi engine will overheat.

Add Coolant / Antifreeze

Add engine coolant/antifreeze. Only add coolant type recommended by Audi. In case of an emergency, it is ok to use aftermarket coolant. It is recommended that the system is flushed and filled with the recommended coolant when possible.

These instructions apply to Audi A3, S3, RS3, A4, S4, A5, S5, A6, S6, A7, S7, RS7, A8, S8, Q3, Q5, SQ5, Q7, TT, R8.



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