Hi everyone,
We own a Mk2 2011 Jazz IMA Hybrid that recently developed the battery cooling fan problem described in another thread on this forum. Thanks to this thread, I was able to diagnose the issue and had the fan replaced with a new original Honda part at a specialist garage for Hybrid vehicles.
Since then, we have had intermittent problems with our 12V battery. On some days, particularly when it is warm and we have the AC on, the red battery warning light intermittently comes on. The light stays on for 10s to 15s, then turns off again for 10s or so, and keeps switching on and off in a very regular cycle.
We booked our car in for a diagnosis in our regular garage, but they were not able to look at it before a short international trip that we already had scheduled. As luck would have it, the day of this trip was particularly hot (34C) and we ended up stuck by the side of the road in Germany, presumably with a dead 12V battery (most electrical systems stopped functioning, including windows, power steering and abs).
The car has since been transported back to the Netherlands. Upon arrival the car appeared to be working normally, with no faults on the dashboard or on our OBD scanner. Today, the garage completed their diagnosis, and also was not able to find any faults. Their best guess is to replace the 12V battery as a pre-cautionary measure, which we will go ahead and do (we do not know how old this battery is).
Has anyone here heard of similar issues? Is the 12V battery indeed the most likely culprit, or should we be looking at the alternator? Again, there are no OBD error codes, so we are in the dark, so to speak.
Any insights would be most appreciated!