Hey all - curious to see whether other people benefit from this procedure or whether I'm maybe just experiencing expectation bias & placebo.
I've had rough-ish idle when sitting at stoplights since I bought my car, and I happened to stumble upon a thread I can't find anymore describing an idle idle relearn process for some recent Toyota (LX600 maybe?). I ran a modified version of this process in my car and my idle appears to be considerably smoother - curious to hear if this helps anybody else, as I've seen some forum members complain about rough idle too.
The official procedure (described as best as I can from memory, since I can't find the thread anymore)
I didn't have time to do this dedicated procedure propertly, but being in the Northeast US, it's starting to get a little bit colder, so I simply turned off the AC (but still ran heat through the climate control) and drove normally for about a week. I also made it a point to idle for 30 seconds when I got to my destination before putting it in Park and volunteered to get breakfast & coffee for my partner, because drive-throughs seem to be a natural way to meet those criteria.
I mean - my car does seem to feel like it consistently idles smoother now, whether AC is on or off - not quite 100% smooth all the time, but I'm curious to see what y'all experience. I suspect it's possible that some GX owners never engage this learning process naturally because our cars default to automatic AC mode from the factory.
I've had rough-ish idle when sitting at stoplights since I bought my car, and I happened to stumble upon a thread I can't find anymore describing an idle idle relearn process for some recent Toyota (LX600 maybe?). I ran a modified version of this process in my car and my idle appears to be considerably smoother - curious to hear if this helps anybody else, as I've seen some forum members complain about rough idle too.
The official procedure (described as best as I can from memory, since I can't find the thread anymore)
- Start the engine as normal
- Warm the vehicle up to operating coolant temperature
- Disable all consumers (A/C is most important, turn off headlights, heated / vented seats, front / rear defrost, turn off all climate control if feasible)
- Put the transmission in Drive if not already in Drive
- Accelerate to over 6mph and stay above 6mph for at least 1 second
- Come to a full stop and stay stopped, in Drive with your foot on the brake, for at least 20 seconds
- Repeat steps 5 and 6 at least 3-5 times
I didn't have time to do this dedicated procedure propertly, but being in the Northeast US, it's starting to get a little bit colder, so I simply turned off the AC (but still ran heat through the climate control) and drove normally for about a week. I also made it a point to idle for 30 seconds when I got to my destination before putting it in Park and volunteered to get breakfast & coffee for my partner, because drive-throughs seem to be a natural way to meet those criteria.
I mean - my car does seem to feel like it consistently idles smoother now, whether AC is on or off - not quite 100% smooth all the time, but I'm curious to see what y'all experience. I suspect it's possible that some GX owners never engage this learning process naturally because our cars default to automatic AC mode from the factory.
