Maxi_z

Hi

I did a search but didn t find anything about it.

On my 991 gt3 there is some strange electric steering rattling and vibrating motion that happens usually when you turn the steering wheel when parking the car it s like if the electric steering start to shake by itself and it will stay like that for some time or stop if you remove the key.

I made a small video of that


It will not do anything when driving

kyrocks

That is odd. I don't think it's normal.

Maxi_z

I will of course take the car to a porsche dealer but just wanted to see if anyone know what could be wrong so if there is a part to order etc they would not loose too much time to find out.

I went out of the car and the wheels are vibrating so I would say it s probably a problem of the electric power steering but don t know if it s the motor itself or play in some parts or make some ecu bug of the electric steering.

A418t81

What's that bizarre noise that's being made while the wheel is shaking? Also, why is your dash lit up like a Christmas tree?

Not normal. What's the warning on the in-dash screen at :03 in the video?

Road Racin

Does it do it with the door closed?
Your also outta gas and need to air up the tires

robmypro

My first thought? Please god don't let this post be from Levd. He's been through enough.

LOL

Maxi_z

The dash light have nothing to do with the problem is just tire pressures that are low as I did not use the car for some weeks and last time I was back from track with p zero trofeo tyres and lowered the hot pressures from the track so when cold they were too low.

The oter light that show up is because during the video I opened the door while the engine was running.

The noise is part of the problem it s I think because the electric steering power assist motor start to make the wheel shake without reason and it makes the wheels and steering shake from left to right.

I can replicate this if the car engine is started and I turn at idle the steering wheel all the way from left to right a few times especially on lower grip surface like painted floors at some point it starts what you see in the video.

It would do the same even with the door closed and with MPSC2 with correct tire pressure.

If you drive the car around at speed it s perfectly fine.

bronson7

This sure sounds strange. Interesting to see what the dealer says. Please keep us posted.

H82BL8

battery voltage very low?

Maxi_z

I drove the car and there is in fact a service message followed by a
rear wheel steering setup problem message in yellow and then it say that the car can be driven.

Maybe some play in the rear steering cause the electric motor to shake as it do not find enought mechanical resistance?

I will see what the dealer say.

bigkraig

Any news?

Macca

Oh Lordy. This had me in stitches. Levd hasn't had a RWS play issue yet. Plenty still to look forward to for him. I hope he isnt reading ;-)

bigkraig

Hey Macca, do you have any details on the RWS play issue? I'm searching for threads..

robmypro

Fortunately I think he missed this one - so far.

UAEGT3

Maxi any update from your service center