4-Low noise in newly acquired 460
10-17-18, 09:57 PM
#1
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4-Low noise in newly acquired 460
Just bought a used 2015 460 with ~30K miles and, like an idiot, I forgot to test 4L during the test drive. Last night, on pavement, I switched to 4L and the transfer case made an awful loud grinding noise. It did switch over though and I was able to drive a bit. When I switched back it made the same noise. Anyone experience something like this? Is there some maintenance I can do to address, or is it likely that the transfer case is near shot? Since I was on pavement, I left the diff alone.
10-18-18, 03:14 AM
#2
Super Moderator
Were you at a complete stop and in neutral?
Mine will either make no noise or just a slight short engagement noise.
It may have never been engaged before. Your vehicle is still under the 6/70 powertrain warranty so if there is an issue Lexus will fix it for free.
Mine will either make no noise or just a slight short engagement noise.
It may have never been engaged before. Your vehicle is still under the 6/70 powertrain warranty so if there is an issue Lexus will fix it for free.
Last edited by Acrad; 10-18-18 at 03:29 AM.
10-18-18, 04:25 AM
#3
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I was at a stop and in neutral, but I only waited about a second to switch it over. I'm reading some 470 owners suggest waiting 3-4 seconds. To be safe I'm going to have the transfer case inspected. I needed to bring it in for a sun visor replacement anyway.
10-18-18, 02:38 PM
#4
Super Moderator
I always try to give mine 5 seconds to complete.
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Acrad (10-18-18)
10-18-18, 05:04 PM
#6
Ashamed to say I have never fully tested my GX. I did use 4low when we had a bad ice and snow storm here in Georgia years ago. I am afraid that I might be asking for trouble if I fully test this and I have no need so far. I am interested if it is in good working order but a bit freaked out to test it. I would have to search for off-road muddy terrain where I live to be comfortable with testing 4low and locked diff. Meh, street tires and wheels on my GX.....
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10-19-18, 08:37 AM
#8
There's no issue engaging 4lo on pavement with a GX460. You can do this and drive around in circles all you want, it's not going to do any damage. You should however only engage the center differential lock on a loose surface, be it in 4hi or 4lo.
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Carnevino (10-19-18)
10-19-18, 08:39 AM
#9
Similar to engaging the transfer case, wait until the 4lo light stops flashing and goes out before putting the transmission back into gear.
Last edited by KJ6IRM; 10-19-18 at 08:45 AM.
10-19-18, 12:50 PM
#10
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