I recently purchased a 2017 GSF and I've been hearing this clicking noise in the driver rear side. I replicated it a couple times when I was accelerating quickly and putting it in reverse once. It seems to be coming from the wheel so I'm thinking it may just be the rear axle shaft nut. I read that some people just torque them down but I want to see if anyone else has had this problem.

 

Press on the sunroof while duplicating the process that makes the noise. I would have sworn I had a rear suspension problem, but it turned out to be the sunroof seal.

 

yeah I have that sound. 2016 GSF, I replaced my drivers axle nut. Sound went away and then the passenger side started to do it..lol. I previously replaced the sunroof seal.

 

I'll go ahead and give this a shot. Thanks for the info.

 

This is what I'm leaning towards and I hope it's as easy as just replacing the nut. Thanks for the help

 

Another thing to add is it usually only happens when I am pushing the car hard. If I'm driving normally and not being aggressive with the throttle no clicking sound. Also, is there anything in the car that might "engage" when driving more aggressive?

 

I went ahead and tested out the sunroof and that's not it. I'll have to try replacing the cv axle nut tomorrow most likely.

 

Do you know the part numbers?

I have the clicking noise too with my 2016 GS F. I saw some people saying it could also be the pads shifting or the sunroof seal, also lol.

 

90177-26001 Nut, Lock. This is a very common part, but it is not common for it to become loose. Torque is 290 Nm/214 ft-lb. These nuts are also staked at the factory to prevent them from coming loose.

 

Earliest I can do this is Saturday. I'll let y'all know how it goes and if it works.

 

Well boys I went ahead and installed a new cv axle nut and it worked. No more clicking sound! Factory specs say to torque to 214 ft lbs but I may have done a little more with my impact. I wish I recorded it before and after but it was a very obnoxious click sound that would come from the driver side rear wheel. Thankfully don't have to replace the cv axle.

 

What I find most interesting about this is why does it happen? If they tightened it properly at the factory, this should never happen, but I've heard of this more than once on the F forums (IS and GS), so I'm a bit baffled at how something this tight goes loose over time but only on a very few cars. Most especially because the nut gets staked into a groove on the axle so it can't loosen (or tighten) in service.

 

Yeah that was the first thing I checked on the nut to make sure it had the groove. I will say that the portion where the cv axle meets the nut was super rusty. Maybe that played a part. Like you said, it is a very odd thing to happen.

 

I haven't had a look at the rear knuckle on the GSF, but is it possible the nut never loosened and something else is giving a little way such as a wheel bearing or washer on the axle etc. ?

 

I get a sound that sounds like a little rattle sometimes on quick acceleration, but to me it sounds like it comes from behind the middle ac vents or navigation on the dash. Do you think this is similar to the sound you guys are describing?