L2 40a overheating

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I have a Grizzl-e EVSE with adjustable output between 16-32-40 amp settings, connected to a 50a breaker. I've used it at the 40amp setting for over a year with no issue.

About a month or so ago I ran into multiple charging errors such as "scheduled charge did not begin" or "charging stopped", typically only after 20-25 minutes of charging. The outlet is cool, the cords are cool, but the "nozzle" connected to the car is hot. Uncomfortable to touch the metal disconnect button.

I stepped down the EVSE to 32 amp and have had zero problems. There are times where I'm returning from a long trip and need to charge as fast as possible, so getting back to 40 amp is a priority.

My car will be getting BC at the dealer tomorrow. What other updates should I request that might solve this? Or is this a common issue that software won't fix?
Hi there, JB. This doesn't sound like the kind of experience we want you to have with your Mach-E. Will you send us a message with your VIN and dealership info? I'll be happy to look into things on my end.
 

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Hi there, JB. This doesn't sound like the kind of experience we want you to have with your Mach-E. Will you send us a message with your VIN and dealership info? I'll be happy to look into things on my end.
I have been having this exact same problem the past 2 months. Brought it to the dealer when it first happened and they said there was nothing they could do.
 

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I don't like that the receptacle in the car is not sealed when the door is closed. Chemical fumes or even salt fumes will eventually affect the contact surfaces over time. BMW and Mini use a dummy plug to prevent that.
Thats a helluva great point - has anyone seen an accessory that is a cap for the J1772 connector? Perhaps hinged or with a tether so it doesn't get lost
 

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I recommend coating the charge port contacts with light machine oil. It will not allow oxĂ­gen to touch the metal, but as soon as a charge plug is inserted the wiping of the metal surfaces will displace the oil, and will not put up any resistence. The surface cohesion of the oil will return to cover the contacts after the plug is removed.
Please do not use machine oil on electrical contacts. It is not made for conductivity. It can also weep and track beyond the applied area. It will also collect dust particles and compound the problem over time.
 


Wally

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Hi there, JB. This doesn't sound like the kind of experience we want you to have with your Mach-E. Will you send us a message with your VIN and dealership info? I'll be happy to look into things on my end.
Was this ever resolved? I’m still having this issue and I’ve been to the dealer 5 or 6 times with the same problem.
 

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The standard coating to keep contacts from oxidizing is dielectric grease commonly used in auto ignition systems, about 6 bucks/tube.
I like this recommendation. I use dielectric grease on my snow plow electrical contacts.
 
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AlpaChino

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Was this ever resolved? I’m still having this issue and I’ve been to the dealer 5 or 6 times with the same problem.
Yes. The charge port was replaced and I also switched to a new EVSE, wallbox 40amp.
 

Wally

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Yes. The charge port was replaced and I also switched to a new EVSE, wallbox 40amp.
Thanks, finally got the dealer to change the port, car is charging now for the first time in more than 6 months. We’ll see if it continues.
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