I also have a 2010 Lexus GX460 with some modifications. The car spent its entire life of a tiny island (Guam max speed limit 35mph) and I shipped to Alaska to drive down to Panama. Made the trip, BUT….
-early on ran into 4LO, check engine and traction control warnings and car would not shift past 4th gear.
-warming the car was a must, as well as installing a Bluetooth computer to clear all warnings before car would shift into higher gears and run normally.
-no mechanic could fix or tell me an answer. Closest I got was a guy in El Paso told me the tires (33in) were too big and it was confusing the computer based on set/required output to reach desired speed. This triggered a protection mode saying solenoid C and D were bad.
-the problem is getting worse and I’m starting to smell burning from the engine on longer trips.
-I am more than happy to replace solenoids, but don’t want to pay $500-1000 if that’s not the problem.
-I also wanted to see if you pursued a fix for your issue? And how that went?
-I read the below reply and it’s extremely detailed and informative, but not sure if my situation is the same?
-OBD 2 (II) says I’m experiencing these two main codes:
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I have a buddy with a lifted 470 that is experiencing the same thing (the only other lifted GX owner I know) so I would love whatever feedback anyone has.
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