Mercedes A class W169 automatic transmission valve body replacement скачать в хорошем качестве

Mercedes A class W169 automatic transmission valve body replacement

Feeling like absolute death but still replacing the automatic transmission valve body on my 2012 Mercedes A-Class W169? Yeah… welcome to my world 🤣🤒 In this video (filmed while I was basically a walking biohazard with the flu), I show you the real, no-BS way to swap out the valve body on a W169 A-Class with the 722.8 CVT transmission — the one that loves to throw “Transmission Visit Workshop” warnings, limp mode, jerky shifts, slipping gears, or just refuse to behave properly after 100k+ miles. Why I did this DIY — harsh shifting, delayed engagement, random gear slips, and that classic “why won’t it change smoothly?” feeling. Turns out the valve body (mechatronic unit/control plate) is a very common failure point on these CVTs — especially the solenoids and conductor plate getting gunked up or failing electrically. What you’ll see in the video (even though I was half-dead): • Draining the CVT fluid (use the correct MB 236.20 spec fluid — about 4–6 liters for a service fill, depending on how much comes out) • Dropping the transmission pan & filter • Carefully removing the old valve body/mechatronic (those 10–12 screws are tiny — don’t strip them!) • Inspecting/cleaning or swapping the new valve body (I went with a remanufactured one) • Reassembly, refilling, and basic level check (hot/cold procedure is key!) • Commissioning/adapting the new valve body using Xentry diagnostics (this is the proper Mercedes way — I used Xentry to perform the control unit commissioning/adaptation and quick test. Forget basic OBD scanners — Xentry is required for full adaptation on these CVTs after a valve body swap, otherwise you risk permanent limp mode or poor shifting) • Final test drive (fingers crossed it doesn’t go back into limp mode) Tools I used (mostly basic garage stuff, but a few specifics): • Torque wrench (those bolts need precise torque!) • Transmission fluid pump/filler • Star/Torx bits • Drain pan & rags (it’s messy) • Xentry diagnostics (with a compatible interface like SD Connect or clone — essential for commissioning) Disclaimer — This is an advanced DIY job. The W169 CVT is fiddly, fluid level is temperature-sensitive, and Xentry commissioning is pretty much mandatory for the new valve body to learn properly. If you skip it, expect issues. If you’re not comfortable under the car or don’t have access to Xentry, take it to a specialist. Also, some versions may need additional adaptations or SCN coding. Filmed with a fever of 39°C, multiple tea breaks, and me apologising to the camera for sounding like a dying walrus 😂 If I can do this while feeling like roadkill, you can probably smash it on a good day! If this saves you thousands on a garage bill (or at least helps diagnose the issue), smash that LIKE button, subscribe for more questionable life choices, and drop a comment if you’ve got the same symptoms on your W169! Thanks for watching — stay healthy, change your CVT fluid regularly, and don’t be like me trying to wrench while ill! 🩺🔧 Any booking enquries can be made to info@ltegarage.com or 01666848686