Just started my LS400 MK4 1999 and it now makes an extremely loud whining noise. This occurred quite randomly as it was not making noise the other day.
Any ideas what it could be?
The noise gets worse as the RPMs increase and the pitch gets higher. Power steering seems to be working fine and have not had Battery issues as of yet.
I have a noise which is difficult to identify , believe it might be to do with power steering as seems more prevalent when turning but can only hear when roof is down and then difficult to separate from road noise.
There is a posting on you tube with very similar sound but no suggestion as to how it was cured , old post and for USA
Anyone any idea , Lexus dealer could not hear it but only tested with roof up
Hi folks, this is my first post here as I have only owned my CT200H Advance for 3 days!
I'm running a 2014 model and notice that when I drive it on motorways, a lot of noise and rumble is being picked up from the road surface. When it drives over a bridge or recently repaired area, the sound changes or fades but never goes away. It is loud enough that I have to boost the radio volume to get a reasonable listening level. The noise starts to become noticeable at speeds over about 50mph and is pretty annoying. It certainly not the smooth elegant silence I would have expected from a luxury brand such as Lexus!
I checked with my supplier (the excellent Lexus Cambridge) who advised me that the low profile tyres may pick up more noise than standard tyres.
So I wondering, if I were to replace the tyres with standard profile ones, would this reduce the road noise? and can I safely do this without causing any other problems?
Also, does anyone offer soundproofing kits that would help reduce noise pickup from the road?
Another thing - has anyone else noticed - that the faster you drive, the less 'stereo' seems to come out of the radio/CD player. When its parked you can clearly hear sounds out of the left and right speakers. But when it is driving along, the sound appears to mainly come from the centre speaker and any left/right stereo signal seems to disappear. Most annoying, and again not what I would expect from a luxury vehicle (it is the standard system, not the enhanced Premier system).
All the best from Cambridge, UK