Frequently asked questions
What is selective catalytic reduction (SCR) technology?
Selective Catalytic Reduction (SCR) technology is fitted to all Jaguar diesel vehicles from 2016 Model Year. It enables Jaguar to meet EU6 emissions legislation by reducing the levels of nitrogen oxide (NOx) emitted from the exhaust system by up to 90%. In addition to a new generation of catalytic converter, SCR Technology requires the use of Diesel Exhaust Fluid (DEF).
What is diesel exhaust fluid (DEF)?
DEF, also known as AdBlue™, AUS 32 and ARLA 32, is a non-toxic, colourless, odourless and non-flammable fluid. Stored in a dedicated tank in your car, DEF is injected into the exhaust system to clean exhaust gases. It breaks down nitrogen oxide (NOx) emissions into harmless water vapour and nitrogen gas.
How will I know if my DEF level are low?
The message centre displays a series of messages when the DEF level becomes low.
The first message states that the DEF level is at a level where a top up is advised
The second message is accompanied by an AMBER warning icon and states to refill the DEF tank
The third message starts a countdown of the distance remaining until the DEF tank is empty, after which the vehicle will fail to start
The final message is accompanied by a RED warning icon and is displayed when the distance remaining is zero and states that no further restarts will be possible until DEF is added to the tank
How often should I refill DEF?
The consumption of DEF can vary greatly. An average consumption rate can be 500 miles (800km) / 1 Litre, but this consumption rate can be more than doubled, depending on the driving style, road and weather conditions.
What happens if I run out of DEF?
Should you run out of DEF, your Jaguar will not re-start after you switch off the engine - this is a requirement of EU6 emissions legislation. The tank will need to be refilled with a minimum of 3.6 litres of DEF before the vehicle will start.
How should I store DEF?
Always store DEF in its original container, and please observe the manufacturer’s storage and handling recommendations shown on the bottle. DEF should never be stored in the vehicle.