Hey all I believe it’s recommended to install on cold engine but wondering if warm or hot is fine

i just got mine and am too excited to wait till it’s cold

ahaha

 

I'd do it when everything is cold just to be on the safe side.

 

Tried it on mine, and it ended with a code on the dash. I would in your case, disconnect both battery cables, install the part and then wait until the next morning and hook up the battery cables again.
I don't know why, but the manufacturers of my part stated in the instructions not to have the key fob anywhere near the car when first connecting the gadget to the engine.
Hope that helps

 

Thanks all for the reply

i assumed if I unplugged negative before I did anything that would be completely fine and luckily my hypothesis was corrsct

it seems you can install a vcm device on any temp engine as long as you disconnect negative first

my engine was hot and when I restarted it, there was 0 codes and worked great