Electrified Garage: Tesla Model S Gen 1 DC/DC 6009170-00-J Fuse Check and Replacement

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In this video, You will be shown how to check for blow fuses and how to replace them in a Gen 1 Model S DC/DC unit 6009170-00-J.

Fuse part # FWP-40A14Fa

The DC/DC is a common failure item where you will either lose heat or air conditioning.
If you lose heat then the PTC heater has shorted internally and will need to be replaced at the same time otherwise the fuse will blow again.
For the air conditioning it usually is drawing too much amperage for short period of time. Typically there isn't anything wrong with the compressor you just need to replace the fuse and put it back together. The car uses the air conditioning to cool the battery so if you blow this fuse you will lose supercharging capability as well.