The Problem with "Slip & Grip" AWD: Full System Teardown

What’s actually inside a transverse, part-time "slip and grip" AWD system, and how does it compare to full-time 4WD drive? In this video, I'll do a complete teardown of a Nissan Pathfinder AWD system to show you exactly how it works, why manufacturers use it and why that "off-road 4WD" button on your dashboard might be a scam. To learn more about the differences between AWD and 4WD, see this video: https://www.youtube.com/watch?v=ChR97eUugTE Many modern crossovers and SUVs claim to have AWD, but they actually operate as front-wheel-drive vehicles until the front tires slip. I'll pull apart the PTU (Transfer case), the driveshaft, and the rear differential clutch pack assembly to reveal the mechanical reality behind "slip and grip" technology and how it engages. What You’ll Learn in This Video: The Transverse Layout: How power is routed from a transversely mounted engine to the rear wheels. PTU vs. Center Differential: Why part-time AWD systems don't have a traditional center diff. The "Slip & Grip" Mechanism: How electronic, mechanical or hydraulic clutch packs engage when front traction is lost. Pros & Cons: The fuel economy benefits vs. the performance limitations of part-time AWD. Common Failure Points: What to look out for regarding fluid degradation, clutch wear, and transfer case failure and how to keep it maintained. Whether you're a mechanic, an automotive enthusiast, or just trying to understand how your own car handles snow and rain, this deep-dive teardown breaks down the engineering behind everyday AWD. If you enjoyed this teardown, make sure to LIKE this video, SUBSCRIBE for more mechanical deep dives, and hit the notification bell! ⏱️ Timestamps 0:00 - Introduction to Slip & Grip AWD: It's actually FWD 1:42 - The Teardown Begins: Removing the Differential Housing 3:08 - Inside the Rear Clutch Pack Assembly 8:15 - How "Slip & Grip" Engages (Mechanical Animation/Explanation) 9:17 - Transfer Case Teardown 11:05 - Conclusion: Is Part-Time AWD Actually Good? Which type of AWD system do you have on your car and has it helped you get out of a slippery situation? Support me on Patreon: patreon.com/speedkar99 This is the Camera I use: https://amzn.to/3oaRcZX (US) https://amzn.to/3KWQ2uU (Canada) Link to Etsy shop where you can purchase speedkar99's brother's socks, t-shirts or hoodies: https://www.etsy.com/ca/shop/Speedkar speedkar9 on Instagram and Tiktok https://www.instagram.com/speedkar9/ https://www.tiktok.com/@speedkar9 speedkar99 on Facebook and Linkedin: https://www.facebook.com/speedkar9/ https://www.linkedin.com/company/speedkar99/ Subscribe for more videos just like this: https://www.youtube.com/subscription_center?add_user=speedkar99