Skip the auto shop - Our mechanics make house calls

Q: How do I top off AdBlue?

asked by on

I want to add some adblue to topoff the tank. what are the specific steps in doing it?

My car has 8000 miles.
My car has an automatic transmission.

A: The Audi Q5 has an AdBlue filler cap locate...

The Audi Q5 has an AdBlue filler cap located next to the fuel filler cap on the side of the car. Some Audis are supplied with a hexagonal AdBlue filler cap, which requires the wheel nut wrench from the boot. Others are supplied with a filler cap that can be removed by hand, in the same manner as the fuel filler cap.

The capacity of the AdBlue tank on an Audi Q5 is 23L, which gives an estimated range of around 9000 Miles, dependent on driving style. When refilling the Q5, the minimum amount is 5.7 liters, otherwise the AdBlue level meter will not acknowledge the top up. Many of the AdBlue containers come with a wide variety of spouts and pouring aids – these are hugely beneficial, making it much easier to fill your tank.

First - it’s incredibly important to use clean or new equipment. For this reason we strongly suggest not using something that has ever come into contact with engine oil, coolant, fuel or lubricant, such as a funnel or spout. Typically, the best attachment are the locking spouts – These are provided with most 2 and 4 liter containers, and screw on to the AdBlue filler cap, and must be “pushed” down to unlock the valve and allow the liquid to flow. These have the benefit of locking out all exterior sources of contamination such as dust or water, in addition to removing the risk of spillage.

After the tank is full (be careful not to overfill and spill) you can reseal the tank. There is a sensor in AdBlue tanks, you don’t need to “reset” anything – it will automatically read the tank as full. Remember that if you fill with a small amount (less than 4 liters), it may not register as a reset and you will still receive low warnings.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: Do I need to get the transfer case fluid and transmission fluid changed?

Hi, thanks for writing in. I looked at your maintenance schedule for your vehicle and found that for up to 150,000 miles, it only says to inspect the fluid level and not change it. The fluids are special fluids and...

Q: When turning on navigation system, radio comes on too

This is a problem inside the nav/radio unit. The system will have to be tested and serviced by a dealer certified repair facility. You may have to have it removed and sent out for repair or replacement.

Q: SUV will not accelerate sporadically and has no power

Hi there: To be completely honest, there could be multiple issues with your 2008 Mercedes-Benz that are causing the symptoms you're describing, ranging from something simple like a crankshaft position sensor to the throttle position sensor or complex issues with...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
How to Renew Your Car Registration in Oklahoma(DELETED)
Having your car registered with the Oklahoma Tax Commission is an important part of driving legally in this state. You will need to do this within 30 days of moving to Oklahoma...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...