Last weekend I was stranded and needed a tow home when my 2006 LX470 went into limp mode (CEL slow flash, VSC Track, VSC off). In about the 10-20 seconds after noticing the lights, I turned on hazards and made it to the side of the road just as all power turned off. Sketchy.
This is after about a 5 hour drive, mostly using cruise control. I had just sped up, noticed the RPMs over 4, took foot off gas and felt a weird hesitation, then limp mode began. As I was pulling over, and the engine dying, there was a kind of flapping noise and a strange smell. Engine oil is fine.
The day before we'd noticed a lack of power when applying gas pedal, barely, but noticeable, and inconsistent.
On the side of the road, turning key turned on dash lights, but absolutely nothing else; no clicks from engine bay, no nothing.
Checked battery once home, finding 12.7 V, and took a charge to 13.4 before going back to 12.7 and staying there.
My code reader says 'failure to connect', which is weird since I've used it many times on this rig. So, I don't have any codes yet.
2 months ago I changed out the master cylinder due to booster pump motor dying, so I checked all connections and grounds and fuses and wires and found nothing out of the usual.
I'm mystified how to diagnose the issue, and can't find anything similar in searches. The only action I can think of to take now is to disconnect each wire connector one at a time to see if the reader will communicate with OBD system.
I'd appreciate any info from the community, thank you.
This is after about a 5 hour drive, mostly using cruise control. I had just sped up, noticed the RPMs over 4, took foot off gas and felt a weird hesitation, then limp mode began. As I was pulling over, and the engine dying, there was a kind of flapping noise and a strange smell. Engine oil is fine.
The day before we'd noticed a lack of power when applying gas pedal, barely, but noticeable, and inconsistent.
On the side of the road, turning key turned on dash lights, but absolutely nothing else; no clicks from engine bay, no nothing.
Checked battery once home, finding 12.7 V, and took a charge to 13.4 before going back to 12.7 and staying there.
My code reader says 'failure to connect', which is weird since I've used it many times on this rig. So, I don't have any codes yet.
2 months ago I changed out the master cylinder due to booster pump motor dying, so I checked all connections and grounds and fuses and wires and found nothing out of the usual.
I'm mystified how to diagnose the issue, and can't find anything similar in searches. The only action I can think of to take now is to disconnect each wire connector one at a time to see if the reader will communicate with OBD system.
I'd appreciate any info from the community, thank you.