Moe47

@Exhaustgases That makes sense. The accuracy with which it maintained the set speed throughout the stretch had me fooled. I will have to start being more careful driving close to speed limits on CC. @1990LS400 Mixing with the Brits has rubbed off on me, innit bruv. But no, the car is a 100% Lexus LS400 year 2000 from North Carolina that I personally shipped to the UAE. Like I said, I got goofed into thinking the car was braking/downshifting to maintain speed downhill. Cheers!

Thanks for the quick reply mate. I've just come back from a drive and I got to test it again on a hilly road. The car does maintain speed somehow. I don't know how it does it, but the rpm went down and the car stayed at set speed (75 mph) in a descent. Tested this over a 100 mile stretch and it was consistent. Although I have to say the ascents/descents weren't extreme. The earlier drive where the car just kept going faster downhill was a much steeper road and in the city limits so the speed was set at 45 mph. Could it be that even going downhill the car can not speed up past a certain point considering the steepness on the motorway I was travelling on and was just coasting? I don't know anything about this technology AND bad at physics. 😂

Hi guys. My 2000 LS400 was at the mechanic's and after picking it up yesterday, I noticed the cruise control just lets the car get faster and faster when going downhill. I could swear it used to keep the car at the set speed no matter if i was going uphill or down. Also just noticed I am getting a taillamp failure error, which i'm guessing is caused by a faulty third brake light as it wont light up. Am i going crazy? Was the LS400 never capable of slowing the vehicle when going downhill?

Thanks a lot, will check them out right away. Yeah I searched for hours to see if someone has experienced the same problem earlief but no cigar.

Hi guys, My '00 LS400's odo baclight burned out recently. I have heard a lot of people having problems with climate control display and fixing it, but couln't find anything on the odo/mileage counter display. I can see it's working fine, just the backlight won't turn on. Could really use your help here!