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Practical information -> Misfuel prevention (Diesel) for Your Citroen C4 Cactus SUV Second Generation (2018-2024)

Practical information  
► Remove the filler cap and hang it on its  
carrier (on the filler flap).  
► Introduce the filler nozzle and push it in as  
far as possible before starting to refuel (risk of  
blowback).  
Misfuel prevention (Diesel)  
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(Depending on country of sale.)  
This mechanical device prevents filling the tank  
of a Diesel vehicle with petrol.  
Located in the filler neck, the misfuel prevention  
device is visible when the filler cap is removed.  
► Fill the tank.  
Do not continue past the third cut-off of the  
nozzle, as this may cause malfunctions.  
► Refit the filler cap.  
► Turn the key to the right then remove it from  
the filler cap, or turn the filler cap manually to the  
right (depending on version).  
Operation  
When a petrol filler nozzle is inserted into the  
fuel filler neck of a Diesel vehicle, it comes into  
contact with the flap. The system remains closed  
and prevents filling.  
Do not persist but introduce a Diesel type  
filler nozzle.  
► Push the filler flap to close it.  
If you have put in the wrong fuel for the  
vehicle, you must have the fuel tank  
drained and filled with the correct fuel before  
starting the engine.  
It remains possible to use a fuel jerrycan  
to fill the tank.  
► With the vehicle unlocked, press the rear-  
central part of the filler flap to open it.  
Take care to select the pump that delivers the  
correct fuel type for the vehicle's engine (see a  
reminder label on the inside of the filler flap).  
► Insert the key in the filler cap then turn it to  
the left, or turn the filler cap manually to the left  
(depending on version).  
Travelling abroad  
The vehicle is fitted with a catalytic converter, a  
device which helps to reduce the level of harmful  
emissions in the exhaust gases.  
For petrol engines, you must use unleaded  
fuel.  
As Diesel fuel pump nozzles may be  
different in other countries, the presence  
of the misfuel prevention device may make  
refuelling impossible.  
Before travelling abroad, it is advisable to  
check with a CITROËN dealer if the vehicle is  
suitable for the distribution equipment of the  
countries visited.  
The filler neck is narrower, admitting unleaded  
petrol nozzles only.  
Fuel cut-off  
Your vehicle is equipped with a safety device  
which cuts off the fuel supply in the event of a  
collision.  
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