Audible thunk/click when going from coasting to accelerating.

[SabrToothSqrl]

60,000 on the dash, still under warranty. Never had any noise or driveline slack. In the last few weeks I’ve noticed an audible click and slight thud when it transitions from regen to going. Most noticeable when under 5 mph. I’ve tried flooring it and not flooring it, it’s more noticeable when slowly accelerating. If I had to guess it’s gear mesh or however the motor is bolted up.

My question: take it in, or has anyone else had this issue? It doesn’t happen all the time, so it’s hard to reproduce, so I fear the inevitable, “we couldn’t find a problem”...

Thanks.

 

[Muzzman1]

If you have a RWD You have an S85, listen for a milling sound at low speeds as well under slight load. Potential for you to get a new Drive unit. Also the clunk could be the axle splines getting some slack in them. If you have an extended warranty those will be covered as well.
Either way, take it in, they will resolve it.

 

[SabrToothSqrl]

Low speed noise level has increased. I will call Monday... thanks.

 

[TE5LAZ24]

I have experienced this in my 2017. Let us know what they tell you! It happens exactly how you described. I was able to duplicate it several times. The only thing is that there is no noise or noise level increase on mine. Its just that thud when you accelerate from 5-10+ mph or standstill.

 

[scaesare]

I got this too on my '13 S85... got it right around 90K miles.

It corresponded EXACTLY to when I had a DU replacement... however service center maintains that it's play in the axle bearings in the hub.

 

[SabrToothSqrl]

... so replace the bearings?
I have to go in, to pickup the wife's Tesla, so I setup the appt. for the same time...

 

[Acho]

Same sound on mine was fixed by replacing the half shafts.

 

[SabrToothSqrl]

How long did that take? is there anyway for me to look at it before I take it in?

I guess I could put it in N and jack it up, and try to rotate the rear right tire, since the L tire would hold it against the diff, and determine what the free play is...

 

[Acho]

Once the teck confirmed the sound he knew that half shafts has to be replaced. The job was less than a day.

 

[LoL Rick]

Check out this thread. Clunking sound is costing me a bundle to fix out of warranty

 

[SabrToothSqrl]

$900 half shafts?! Holt $hit. That's a scam. I can do the work myself when I'm out of warranty... but what a scam on that price!

I'm out of warranty March 2019, and it scares the hell out of me - cheaper to total it against a tree than fix it out of warranty!

 

[artsci]

For sure a drive unit problem.

 

[CUBldr97]

had this on my 2013 RWd, one day fix...

 

[skitown]

Our '13 S85 had this. Ultimately it was replacing the half shaft(s) that solved it.

 

[SabrToothSqrl]

Getting a new drive unit, hubs, and hopefully shafts.

ALSO, got a XP90DL loaner...so... I’m not gonna complain..?