Hi everyone ...
I just purchased a 2013 Lexus GS 450h with 83K miles on it.
The car drives great except for an annoying noise in the rear which after checking in the trunk, I found the rubber on top of the shock mount cracked in pieces and there is some grease/oil in that area.
My mechanic friend recommended I go to the dealer provide the VIN and get a new shock and the absorber rubber cushion on top.
Based on my VIN, the dealer provided me with the following part numbers:

48530-80756 ... Shock Absorber (Rear Right)
90948-01101 ... Cushion

Based on my car VIN, the dealer confirmed that this is a regular shock.

There is a plug on top of the shock absorber that I am not sure of its function or if this is an Adaptive Variable Suspension shock.

Please check the attached picture and let me know your thoughts as I am clueless.

Thanks!

Rear Passenger Shock Mount area

 

That is an AVS shock.

 

That is what the top electrical connector is for the AVS control that adjust the Strut.

 

Thanks guys for the info ...

So the dealer quoted me the wrong shock ?

Is the AVS Shock totally different from the regular shock and has a different part number ?

 

Totally different with a different part number.

AVS shocks are adjustable, adapting to the road, drive mode, and your control inputs. A solenoid in that housing bolted to the top of the shock rotates a tab on top of the shock to adjust the damping.

 

Thanks @panyo64

Honestly the ride is perfectly fine, soft and very comfortable. It is only the cracked cushion on top of the shock that is causing the knocking/clunking sound and can be only heard in small bumps

Do you think I can change the top cushion only as it seems that the dealer does not have the AVS shock in stock ?

 

Is that Strut leaking? Have you had it checked? Where is the fluid coming from up top? If the strut is ok then you could just change the Strut mount.