Could you tell me how to fix this error B158F on a 2017 Toyota 4Runner? (1 Viewer)

[doctacarta]

Has anyone come across this error on their 4Runner? It's throwing this code out of nowhere, and I have a great warranty. Toyota is saying this isn't exactly pinpointing an exact cause to justify to the warranty company to replace "x." This is highly frustrating.

This all started a few months ago when the vehicle randomly turned off while driving, which was scary to say the least. I took it to Toyota, and they couldn't replicate the issue. I then got a scanner and came across this B158F error. A few days ago, the vehicle wouldn't start, so I took it back to Toyota. They told me the battery was healthy and recharged it, but they haven't been able to resolve the B158F error - ugh.

Any input or guidance?

 

[gnob]

i wouldn't say that code is the root cause, unless the nav system is the culprit killing the battery..
if your dealer is balking the repair, id find an alternate one. a vehicle dying while driving is a very dangerous situation.

 

[doctacarta]

i wouldn't say that code is the root cause, unless the nav system is the culprit killing the battery..
if your dealer is balking the repair, id find an alternate one. a vehicle dying while driving is a very dangerous situation.

Yeah, that is a great point! I may take it to a local shop that I had good success with in the past, and who knows how to "work with the warranty company".

 

[vipergrhd]

Make sure battery terminals are tight and clean, have the charging system load tested with an old school carbon pile load tester.