Hi
You don't say what engine your 500L has. If it is a diesel with DPF filter then yes the oil change/degradation reset has to be done. If you have a petrol engined 500L then you may be in a better place.
https://www.multiecuscan.net/SupportedVehiclesList.aspxSuggest you look here:
MES does cover the 500L will do what you are interested in.
I've not kept up to date with other non
MES options but you may wish to call/consult Gendan (
https://www.gendan.co.uk/) as they have other well priced EOBD kit that covers Fiat cars and compared to purchasing
MES, cables and Laptop computer there may be a better solution for you.
They have the Foxwell NT530 which will do Oil change resets plus a loads of other stuff but this will not have the full coverage that
MES provides.
https://www.gendan.co.uk/product_FXNT530F.html
You need to speak to Gendan (or others that know what they are talking about and care for you as a customer).
As for
MES and PC requirements then I run/ran
MES on a modest 2015 tablet PC. (• Intel® Celeron™ N2806 processor (22nm, 1.60GHz, DDR3L-1066, 1MB L2 cache, TDP: 4.3W)
If you choose
MES the I would suggest you AVOID Blue Tooth interfaces and stick with directly connected USB interfaces. Personally I would go for OBDLINK SX. However all the Gendan packages/interfaces for
MES WILL WORK and if the don't or you have issues then will help.
Gendan are
MES recommended suppliers and yes a little more expensive that other "unknown" ebay/other supplied devices which often have issues with
MES etc.