Bought the E320 late summer. With cold weather, noticed the first to second upshift delayed. Most here indicate it's normal, although the 3-5 blocks seems excessive (what if you had to enter a high speed road right out of your driveway?). But additionally, it has recently slipped a couple of times. Took it to independent tranny shop that rebuilt my SL two years ago. They felt it was not shifting right, and had a code I believe was "reverse/park lock". They felt it was external and not the transmission itself, and felt I should take it to a MB dealer for better diagnostics. Dealer stated it was holding upshift too long, but no diagnostic codes set. They didn't suggest it, but I told them to change the tranny oil and filter ($275). They said it's much better, but it's still "not right". Stated mech could find no evidence of metal in the tranny. Still, they said they would recommend a new tranny at $4500. I said no, I'll drive it like I stole it and when it dies, I'll tow it in for a new tranny. What do you think? Should I take it to another MB dealer, independant, or just drive it and see how long it takes to break?

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2manycars
02 ML320 (SOLD)
98 SL500
03 E320
89 260E
75 450SL
98 Chev Silverado K1500 (SOLD)
02 Chev Avalanche 2500
05 Harley Davidson Ultra Classic
02 27' Toy Hauler