One Week It Works, The Next It Doesn’t - '21 RAV4 Window Switch Diagnosis

In this video I take a look at a customer’s 2021 Toyota RAV4 with an intermittent driver power window switch problem. When the issue acts up, every function on the driver master switch quits working, but all of the other windows still operate normally from their own door switches. Then out of nowhere the switch starts working again and may not fail for another week. Intermittent electrical problems... every technician’s favorite form of psychological warfare. I know this video is a long one, but I wanted to bring you through the entire diagnostic process from start to finish so you can see the thought process behind tracking down a problem like this. No parts darts, no guessing, just proper testing... Need access to wiring diagrams and repair info for your vehicle without breaking the bank? Use this link here to get affordable access to Mitchell On Demand DIY https://eautorepair.adtrk.biz/?a=1105... Want to support us AND get early access to the SMA videos as they are uploaded? Consider joining the SMA "YouTube Membership" by clicking here:    / @southmainauto   You are also able to support us on Patreon if you feel inclined to do so by clicking here:   / southmainauto   CHECK OUT OUR "SMA SWAG" STORE! Go on Teespring and get your very own SMA merch! https://teespring.com/stores/the-sma-... If you don't like Patreon feel free to use the "PayPal Me" link: https://www.paypal.me/SouthMainAuto The South Main Auto Amazon Store: https://www.amazon.com/shop/southmain... AES Wave Automotive Diagnostic Tools: https://www.aeswave.com/cart.php?m=af... Thank you so much for the support! -Eric & Vanessa O. Disclaimer: Due to factors beyond the control of South Main Auto Repair, we cannot guarantee against unauthorized modifications or improper use of the information provided in this video. South Main Auto Repair assumes no liability for property damage or personal injury resulting from the use of any tools, equipment, chemicals, lubricants, or information presented. We strongly recommend following safe practices when working with power tools, automotive lifts, jack stands, electrical equipment, blunt instruments, or any other tools and equipment shown or implied in this video. No information in this video creates any express or implied warranty or guarantees any particular result. Use this information responsibly and at your own risk. #Toyota #Rav4 #AutomotiveDiagnostics #PowerWindow #ElectricalDiagnosis #MechanicLife #AutoRepair #ToyotaRav4 #IntermittentProblem #DiagnosticTrouble