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Interesting posts thanks guys. I tow moderately heavy trailers (4000 lbs) with my GS430, and in cruise will select 5th, rather than lugging in top. A couple of questions;
1. Will the lock-up occur in 4th & 5th?
It should. I'm not familiar with that transmission specifically, but generally speaking the TC will lock up at >40mph in the top 2-3 gears.
Originally Posted by Tony2214
2. I've never had any overheating issues, and the trans always works perfectly. I have considered installing an extra / aftermarket trans oil cooler, but haven't bothered because everything is working fine, with no signs of distress.
If you're towing mostly on flat roads at constant speed you are probably ok. But that's a pretty heavy load for a sedan, so if you're doing a lot of stop/go or elevation changes, definitely worth considering adding some cooling capacity.
Yeah, you are reflecting my thinking.
- AJT123; the 4,000 lb is an extreme, and rarely that heavy. Mostly in the 3500-3800 lb range. It handles it fine.
- geko29; thanks for your thoughts. If the car tells me it's not happy, I'll certainly be installing a cooler.
Another question, my 2005 GS430 was sold in Japan, and is a Gen 3 subsequently imported to New Zealand, where I live. It has active sway bars, with all the control components in the trunk (see photo). I have two repair manuals, and neither cover this, so my questions are;
1 was the active sway bar an option, not a standard fit?
2 does anyone know where I can find the Repair manual / technical data covering this installation?
