A majority of Aston Martin DB9’s, DBS and Rapides between 2004 and 2014 were fitted with an excellent Touchtronics II 6-speed automatic gearbox made for Aston Martin by German company ZF (I’ve written about this elsewhere if you are interested).
Aston Martin claims the transmission is ‘sealed for life’. I think its foolish to just have blind faith and hope that the fluid level is correct. How would you know until the transmission begins to misbehave after an undetected leak, and at that point is there damage being done? Do I think you need to check the Automatic Transmission Fluid every year? No. Would it be a good idea perhaps every 4 years? Probably. Should you check it if you see any signs of a weep or leak? Absolutely (and fix the leaks)!
For me, I am just finishing off a full service of the transmission including changing the fluid, filter and seals. I have put together a series of articles on the process (which you can find here). During the service I was able to drain 9.5 liters of fluid out. After putting it all back together the last major step is to properly refill the transmission fluid and set the final fluid level. I’ve already done the initial bulk refilling of the fluid where I got about 9 liters back in (check out that process here), and now its time to do the final detailed level set.
Since Aston never intended to make this serviceable, its trickier than you might think. I this article I will show you how to tackle the steps and share some tips and tricks along the way. Continue reading “Checking the Automatic Transmission Fluid Level in an Aston Martin DB9”