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Old 11-07-2012, 08:24 PM
elektron82 elektron82 is offline
Location: Florida
Join Date: Nov 2012
Posts: 12
Mein Auto: 05 545i
Unhappy Oh boy...

Hi all.

I just bought an 05 545i a little over a week ago with 76k miles. Its an automatic. The dealer thought it had the sport package but I found out via research that it actually does not. Because of that I didn't think much about the rough shifting it had on test drive. At this point I am starting to notice it more because I am not "getting used to" the car and getting smoother technique.

I have a lot of dead zone in the gas pedal, about the first 10 degrees has almost no effect. Then it picks up and causes a "surge" of torque at once after pressing down far enough.

The other thing I noticed was that I can't smoothly stop the car. The downshifts are noticeable no matter how much braking is applied. Once about to stop it seems like it downshifts and then the idle suddenly drops. If i don't time my foot letting up on the brake pedal carefully then the car ends up bucking wildly.

I don't have any slams or sounds going on. I don't notice any hiccups or hesitation in any gear. Its just when starting off, braking, and especially when coming to a stop it has issues.

Does this sound like the mechatronics unit is starting to fail? If so I am thinking to do fluid/filter service and save up for a different car. Of course on the other hand I feel confident I could replace it myself and if the car drove nicely afterwords then it might be worth it to me. I paid 18 for the car. I think I will start with either a test drive of another 545 or have an experienced tech confirm it.

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