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Two odd issues, anyone else?

JanetM

Member
Sep 7, 2015
44
41
TX (Austin area)
I have felt the bump too, but only post 7.0 upgrade. A day or two after I updated circumstances required me to sit in the parked car for about 1:45 with all systems running. Not only did I hear the a/c making all kinds of crazy noise (something it never did pre-update) but several times while sitting in (P)ark I felt a little bump and movement and sometimes I heard a noise from the rear. It wasn't loud or terribly obvious but I definitely wondered about it. Once it happened to me at a stop sign and I, too, wondered if I'd been rear-ended (more like tapped). I haven't felt it since then, so I'd sort of dismissed it until I read this thread. I haven't felt it in at least a week and a half. The timing of its appearance and its intermittent nature make me think it was probably introduced in an update just prior to 7.0, maybe one of those odd in-between revisions that it seems not everyone gets? Really curious what the SC had to say to those who have been in and mentioned it recently.
 

Max*

Charging
Apr 8, 2015
6,670
3,719
NoVa
The bump has 100% happened since v7, as the tech confirmed it twice on v7.xx.56.

They updated me to .77, I haven't felt the first issue anymore (shudder), but have felt the bump once.
 

MBX5

Member
Sep 17, 2015
18
0
L.A, CA
I have had this issue a number of times over the past couple of weeks on my three week old P90D. It is always in stop and go traffic and is a clunk about a second or so after I have come to a complete stop. It is definitely coming from the front somewhere. Unfortunately, it is intermittent and I cannot replicate it on command, so I have not bothered to contact the service center as of yet, as it would just be a crap shoot whether they would hear it while it was in for service. Having said that, I have noticed a whine from the front motor that seems much louder than when I first got the car, so maybe I should bring it in. I am still absolutely thrilled with the car, though.
 

Max*

Charging
Apr 8, 2015
6,670
3,719
NoVa
What firmware are you on?


Update: #1 went away completely after the upgraded my firmware. #2 has become even more rare, so much so, that I think it only happened once since 11/1.
 

rallykeeper

Member
Jul 9, 2013
265
923
Southern California
Second on the Shudder. Except, it wasn't in my MS -- it was a loaner. I just noticed it after coming to a stop and waiting for the light to change. Car shuddered. Felt exactly like I was releasing a clutch pedal without applying enough gas.

It also seemed to nudge slightly forward.

Before seeing this thread, I was attributing it to some P85 difference (the loaner was a P85) to my S85.

For a data point, the loaner P85 is pretty old (39k miles and 10k-ish vintage VIN) and has .56 of v7.
 

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