Strange clunk noise from rear

Hi. Welcome to Prius Chat. Perhaps you could give us more information about the condition inside and outside the car at the time it happens, like temperatures, heater/Aircon settings lights etc. Hopefully someone will come back asap.

 

Wasn't there a service bulletin for the rear shock tower bolts? Could be that.

 

Good idea Mendel. @Asifpop you might want to mention that to your dealer. It should be covered under warranty, so let us know how you get on. Come back if the dealer is reluctant to help, ok?

 

Nuts, not bolts, but yes, there was. In the U.S.A., it’s T-SB-0144-16 Rev1, “Click Noise From Rear While Driving,” issued on October 5, 2016 and revised on January 26, 2017. This bulletin applies to 2016 model year Prius cars with VINs earlier than JTDKBRFU#G3006967 or JTDKARFU#G3007491, and only if they “exhibit a clicking noise from the support nuts on the rear shocks.”

The countermeasure is to install two new nuts, part number 94130-61200. The nuts the ones shown in Figure 48-04 of the Electronic Parts Catalog, at the upper end of the shock absorber support assembly, labeled with part number codes 48750J and 48760C. The bulletin does not give detailed work instructions, but instead it refers to the Rear Shock Absorber section of the Repair Manual. The bulletin allows 1.5 labor hours for the whole job, which should be done at no charge to the owner if the vehicle is still under warranty.

The bulletin is available by subscription to techinfo.toyota.com; I couldn’t find a freely-available source.

 

My brand new 2017 Prius makes some weird noise like a click at exactly 13mph first time when it reaches that speed after starting the car. The noise is from rear/left side. Is it same issue/symptom that is being referred here in this thread?

Thank you

 

So I'm not the only one! Everyday when I leave the parking garage at work I hear the initial brake clunk as the hill assist releases and I start rolling. Then when I get to about 10-13 mph rolling in electric I heard a clunk from the rear drivers side of my 2017. At this point the gas motor has not started and I'm still rolling in all electric. Haven't figured out what it is yet.

 

Your profile has a picture of a Gen 4 and that conflicts with the printed model 2007 two.

If you are referring to the Gen 4, then there is a tech bulletin out regarding a loose upper shock nut which can be remedied free under warranty.

 

auto door locks at 13mph?

 

Recently I got the same issue on the left rear. I haven’t been to dealer’s yet so confirmed yet. My concern is will they replace the nut for both left rear and right rear ? Even currently it only happens to left.

 

This clunking noise at 13mph is a test of the ABS system. It's somewhere in the manual.

Posted via the PriusChat mobile app.

 

had my car checked today. It was said the shock resistant needs to be replaced.