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Practical information -> Misfuel prevention (Diesel) for Your Citroen C4 SUV Third Generation (2020-2025)

Practical information  
The vehicle is fitted with a catalytic converter,  
which helps to reduce the level of harmful  
emissions in the exhaust gases.  
For petrol engines, you must use unleaded  
fuel.  
Travelling abroad  
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As Diesel fuel pump nozzles may be  
different in other countries, the presence  
of the misfuel prevention device may make  
refuelling impossible.  
The filler neck is narrower, admitting unleaded  
petrol nozzles only.  
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.  
Misfuel prevention (Diesel)  
(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.  
Charging system  
(Electric)  
► 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 your vehicle's engine (see a  
reminder label on the inside of the filler flap).  
► Turn the filler cap to the left, remove it and  
place it on its support (on the filler flap).  
► Insert the filler nozzle and push it in as far as  
possible before starting to refuel (to minimise the  
risk of splashing).  
Operation  
400 V electrical system  
The electric drive system, which operates at a  
voltage of approximately 400 V, is identified by  
orange cables and its components are marked  
with this symbol:  
Do not continue after the nozzle’s third cut-  
out. Doing so may cause malfunctions.  
► Put the filler cap back in place and turn it to  
the right.  
When a petrol filler nozzle is introduced into the  
fuel filler neck of a Diesel vehicle, it comes into  
contact with the flap. The system remains closed  
and prevents filling.  
► Close the fuel filler flap.  
An electric vehicle’s power train can  
become hot during use and after  
switching off the ignition.  
Comply with the warning messages shown  
on the labels, particularly inside the charging  
flap.  
Do not persist but introduce a Diesel type  
filler nozzle.  
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.  
The use of a fuel jerrycan to fill the tank  
remains possible.  
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