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Servicing guides and mods

451 Air Con Re-Gas

The rubber seals on your air conditioning pipes don't last for ever, especially when you don't use it regularly. The seals dry up and the gas escapes leaving you with no air-con. It is possible to refill it DIY style using a can from Halfords or a similar motor factors.

Modification Details

It states in the manual that the air con must be used for at least 15 minutes 
every week otherwise the rubber seals will perish and the gasses will escape, 
no gas, no air con. Use it or lose it.

OK, I Lost It, What Now?

You have 2 options, DIY or get a professional to do it.


451 fortwo 420g
451 Electric Drive 500g

The amount + 0mg is the figure I have been told but 0mg of oil must be a refill
measurement assuming that the gas has escaped and the oil is still in the system.

Get a Professional

Look online for a local garage that deals with AC. This way you know 
the system has been drained and everything has been done properly.

Do It Yourself

Quite a few motor-factors sell bottled air-con gas, even Halfords so go buy gas.

The Government in many countries have banned the sale of disposible R134A canisters.
There are other compatible replacements and companies claiming it's not R134A when it actually is.
You will have to look around and see what you can get.

You can reach the port just by taking the bonnet panel off but the tubes you get with
many DIY kits are too short (Thanks Bob S). Check the length of the pipes on your kit.

When they don't reach, remove the front panels 
(guide found here)
With the panels removed, look into the left hand side hole.


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