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BMW 5시리즈 수리 사례

G30 (2017-현재) · 520d

2026. 10. 6. 작업

난이도 & 준비물

증상

Alex_225 said: mercedeslimos said: I did a change on a buddy's 5G-Tronic on Saturday; it hadn't been done in 136k miles. To say the drive improved was putting it mildly. I've got my Phaeton with the 6HP to do soon, a bit more involved as a job, but it's already had a box and a torque converter in the last 50k, so it hasn't been left forever without maintenance - I've heard the 6HP19s seem to like to give trouble! It's my first torque converter auto (in 70 cars of manuals, and 1 DSG!)If I'd kept my old E320cdi I'd have certainly ended up getting the gearbox serviced. I bought it with 104k on

처리 내용

mercedeslimos said: I've driven many torque converters over the years through work, mostly 5, 7 and 9G-Tronics, very dependent on the engine; a V-Class is a dog no matter what, as the engine and body combo is wrong. The V6 CDi is lovely then with that. Obviously, the 6HP is the only box available in a Phaeton; it never got the 8HP as the later A8s did. I wonder if you could convert it? The DSG is a wet-clutch one; it works very well with the 2.0 TDI motor, giving excellent economy and good engine braking, etc. Different cars, different box. A DSG in the Phaeton would just be wrong, but likewise a slushy box in a sporty car; you can see where manufacturers dropped the ball. I believe the aftermarket scene for transmission swaps is getting bigger as people realise how good *some* autos can be!When I first got the Phaeton, I found how incongruous the mapping of the converter lockup clutch was; it didn't seem to have any rhyme or reason as to when it would decide to lock up. Then I found out that it was 100% mapped for comfort, to deliberately "slip" the converter going up and down to the next gears - to hell with economy; if you wanted economy, you didn't buy a 2300kg steel-bodied luxury saloon. Then it all made sense. The slip of the converter basically means virtually seamless movement, somewhat like a CVT but with a less rigid engine note, and less linear than a manual box. The only reason I can hear the engine at all is that the exhaust is empty of all emissions control gubbins... I think the point of a car like this is to not feel the engine, the road or anything else and just relax and listen to the music on a good stereo and get there with your arse suitably massaged!From owning them, I was a fan of the 7G in our old CLS350cdi, just worked really nicely as a packager but despite being the same gearbox and engine in our ML, it never felt quite as good. Possibly as the engine sounded different in both and felt coarse in the ML where it felt more potent in the CLS