The last week or so I've had to crank my early 2005 MK4 Turbo TDI Jetta BEW engine longer than usual, but it's always eventually started. Now, no matter how long I crank the engine, it won't start. Sounds like it's turning the usual cranking speed. I "cycled" the glow plugs (it's maybe 65 Fahrenheit now) a couple times. The glow plug light turns off faster than I recall, and the battery indicator light flashes while I'm cranking, which I never noticed flashing before. Can't find the year of manufacture on the battery. I've had the car for 3 years. No record of when the previous owner bought a battery. Should I take the battery to be checked at a parts store (after I clean the terminals, of course)? Should I try to jump start from the other car? Should I hot wire the glow plugs? Meanwhile, its got poor acceleration. It automatically shifts at high speed, like 3200. I've been dealing with this for a couple weeks, and just get used to it. I doubt it's related the above no-start issue, not sure. Maybe the vacuum hoses are leaking again. Had that problem a couple months back. Figured I'd wait for worse trouble before taking it into the shop again. Any advice ?