I have a 2007 RX350 and over the past seven years I have replaced all six engine coils. A few months ago, I started the cycle again replacing 1. Another blew this morning. The engine light flashes, VSC light comes on, and car putters and loses power. Is there another reason this could be happening? Please help so I can stop replacing coils every few months! 230K club.

 

OEM or aftermarket coils? What makes you think it's the coils? What are the codes? Also which plugs are you using, have they been replaced recently?

 

OEM not sure about plugs or if they've been replaced. My mechanic said this is the #3 coil, center rear.

 

Hi, Your mechanic Needs to check the Connection to the coils. A poor connection can mimic or cause coil failure. Also check the spark plugs, that's Very Important!
PS-OEM coils are Denso.

 

I'd swap out the plugs w/ Denso's since your there.....