2016 Jaguar F-Type /S Series
After some diagnostics concerning an SOS System Limited Functionality warning, further error reporting came up with a "B1A01 - 14 / Speaker Circuit". Any feedback from anyone on this? Where is the "speaker" that is referred to in this error message?

 

Hey no help but I did notice your 1958tbrd name?
I have had a 1959 T-Bird for 47 years.
.
.
.

 

After replacing the TCU Battery, I did have a Jaguar technician reset the system which called for acknowledgement of the TCU battery replacement. The dash error came and went for a few weeks and then was left "hard on". I did notice that my regular car battery was not holding a charge very well. In reviewing all of my service records, I couldn't find any record of the battery ever being replaced. I had been planning, and finally took my vehicle to Ocala Jaguar (had handled most of the service since 2020). The battery was "on it's way out - low cranking amps" so had it replaced. With the installation of the new battery (and complete systems reset), the TCU - Limited Functionality error and warning light have now gone away - go figure.

 

I have a CTEK agm charger and it has a feature that allows you to "renew" the battery. I forget the term that is actually used, but it sort of deep discharge and recharges the battery to get it more life. Seems to do the trick to be honest. Dealer in Annapolis gave me an Interstate battery when a Li Anti Gravity battery caused me to get stranded twice (the newest models with the restart, keyfob, etc.). Gave up on the Anti Gravity after they said they had no idea what to do.....anyway did the interstate and it was not super healthy....did this "renew" cycle and have done it once a year....that is now 4 years ago and it is running strong. I think AGM batteries can last a lot longer than we all think if you do this recovery process once every 6m or year....just an N of 1, so cannot claim this to all be valid, but FYI.

 

"Recondition"