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Old 01-16-2019, 04:36 PM
RRPhil RRPhil is offline
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Join Date: Jan 2011
Location: Blackburn UK
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Without doubt, the single biggest problem with the 6HP26 is faulty solenoids. These cause the vast majority of issues with this transmission. The other main issues are:
  • Transmission refuses to shift higher than 3rd gear (E-clutch slipping due to hydraulic leakage caused by wear in lead-free rear stator bush)
  • Clunky 2-1 rollout shifts (Latest mechatronic firmware updates not performed)
  • Clutch packs destroy themselves following fluid change and adaption reset (ECU cannot find new adaptions in time to prevent clutch plates burning up, due to change in friction coefficient)
  • Complete loss of drive (Failure of output shaft spline through fretting corrosion due to lack of lubrication at factory)

Mechanically though, I would say it is a more robust transmission than the 5HP24. Having said that, Audi put the 5HP24A behind their 6.0 litre W12 engine and even the 353kW/560Nm Audi RS6 Plus, so the 5-speed running gear is certainly capable of handling more power/torque than the 4.6iS E53 delivers.

Phil
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