I installed USDM power mirrors. Mine only fold under manual power, just like a regular set of mirrors. I also completely disected my mirrors to get the shells off for painting, and I took the opportunity to clean out the moving parts. His mirrors could be binding somewhere and that's what's preventing him from being able to fold them. Or if they're JDM power folding, he may have messed the wiring up. I tested out all of my wiring before running my harnesses.