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Strange regen braking problem - shaking

teslick2

Member
Sep 1, 2019
45
22
Virgina
Hi all,

Now that the weather is colder I have noticed some strange shaking with the regen breaking on my 2013 model s. On cold mornings when I start driving it will start to shake pretty hard at low reg braking speeds (no feet on either pedals). The moment I press the brakes it stops. It appears to only happen on downhills and tends to go away once I’ve been driving a while.

Has anyone ever experienced this or can they share any thoughts or advice? Since it only happens under specific conditions it’s hard to demonstrate to the service center and they have not been able to help.

thanks!
 

Benjanos

Member
Jul 20, 2018
194
127
Switzerland
Strange it goes away after driving a while. Wonder if once the battery is warm and the regen becomes stronger the problem is less apparent for some reason.

Did you recently change to winter wheels/tires? Wheel/tires can create strange problems sometimes if not setup right. Just a thought.
 

teslick2

Member
Sep 1, 2019
45
22
Virgina
update: the problem went away when I got the tires changed. The old ones were pretty beat, and the metal bands were showing in some places. That being said, I think it was a combo of things happening that were causing the shakes. I found that it only occurred when doing regen braking, on a downhill, while the air suspension was lowering. Add bad tires to the mix and things got weird.
 

JDWalker

New Member
Feb 7, 2020
1
0
San Francisco
Hi all,

Now that the weather is colder I have noticed some strange shaking with the regen breaking on my 2013 model s. On cold mornings when I start driving it will start to shake pretty hard at low reg braking speeds (no feet on either pedals). The moment I press the brakes it stops. It appears to only happen on downhills and tends to go away once I’ve been driving a while.

Has anyone ever experienced this or can they share any thoughts or advice? Since it only happens under specific conditions it’s hard to demonstrate to the service center and they have not been able to help.

thanks!

I started to have shaking going down only very steep hills, which also stops when I break. It shakes an alarming amount. It’s didn’t do this for the first few weeks, but now does it consistently in one steep hill by my house. I made a service appointment.
 

teslick2

Member
Sep 1, 2019
45
22
Virgina
I started to have shaking going down only very steep hills, which also stops when I break. It shakes an alarming amount. It’s didn’t do this for the first few weeks, but now does it consistently in one steep hill by my house. I made a service appointment.
Keep me posted on the results! Mine still does it a little, but it’s much less common now.
 

Battpower

Supporting Member
Supporting Member
Oct 10, 2019
2,110
2,132
Uk
Shaking on heavy (or moderate) acceleration or deceleration loads on warn drive shaft couplings / CV joints can cause odd vibration. Especially CV joints change with temperature, spread of grease and random alignment of internal components.

If you have air suspension, changing the ride height can give some diagnostic clues.
 

JB Korea

New Member
Apr 19, 2021
1
0
Seoul, Korea
I started to have shaking going down only very steep hills, which also stops when I break. It shakes an alarming amount. It’s didn’t do this for the first few weeks, but now does it consistently in one steep hill by my house. I made a service appointment.
Hi, would you share me the updates regarding this post? Has this problem been solved after checking in the service center? I'm having the same problem in Seoul, Korea and I wonder if other people who experienced the same issue fixed their errors! Please share me your thoughts and experiences. Thank you so much in advance!
 

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