I was driving along at about 35 m.p.h. yesterday, enjoying the beautiful day and the falling leaves, when my Jaguar starts popping multiple warnings. “ABS not functioning” “Parking brake not functioning” “Stability Control not functioning” “Driver Condition Monitor not functioning”. And, the rear spoiler deployed. What the…?
I pulled over into a parking lot - noticed the steering was heavy. I shut the car off, sat there a few minutes, and restarted the car. The warnings went away and I was able to manually put down the spoiler. Everything seems normal now, except I have a check engine light.
The car is going in for it’s 3-year service soon.
Any thoughts on this weirdness?
-Rick

 

I'm sure the car is fully charged. That would be the first check. Pull the codes before anything else. The spoiler rising is weird. The proximity of the switches maybe a clue?
Throwing ideas.

 

Yes, I put the car on a (Jaguar branded) CTEK if not driven for 2 or 3 days. I have not invested in a code reader, yet. Since I have an appointment at Sudbury JLR soon, I’ll let them sort that out.
Thanks!

 

Why not get a code reader and see what the code is? Maybe you can reset it.

 

Well-maintained batteries are less likely to fail early, but it's one possibility. My F-Type battery lasted forever until I replaced it on general principle, but the F-Pace needed to be replaced under warranty. And, if power is the root cause, the codes wouldn't tell you much.

 

I may ask Santa for a code reader. Is there one that you would recommend?
This is a CPO car, and it had sat for a while. There was a low battery warning displayed on my test drive.
It is perplexing to me that an F-Type Jaguar can’t seem to keep it’s own battery charged, like a normal vehicle.

 

The F-Type, like all luxury cars with very complex electronics and multiple modules, requires full battery voltage…when the modules do not get sufficient power all sorts of gremlins crop up, such as the ones you have just mentioned.

The car’s system is fully capable of keeping the battery charged providing that the battery is good to begin with, and fully charged (but possibly not one left dormant for long periods on a dealer’s lot), and assuming that it is used regularly and for periods long enough to replace the charge lost by merely starting the car and getting all the modules functioning.

The fact that the battery was low enough on your pre-purchase test run to trigger the “Battery low” message suggests that you may have a close-to-end-of-life battery, hence the symptoms you have described.

 

If Santa is bringing you a code reader, you should consider asking for one that covers all of the JLR modules, not just OBDII. The ICarsoft LR2 v.2 has worked OK for me.

 

Update:
After two days on the CTEK, I took the car out for a ride, today. Everything is normal, even the check engine light is extinguished. As usual after a charge, the sometimes flakey power trunk lid behaved perfectly.
I’m thinking I should suggest to my servicing dealer that this car needs a new battery.

 

[QUOTE=stirlingsilver;2582081]I may ask Santa for a code reader. Is there one that you would recommend?

Consider the TorquePro app for your phone.
Keep a wireless OBDII module in the console or glove box.
Can read and reset OBD codes, monitor volts, temp, RPM and virtually any parameter.
My first GOTO, then IDS-SDD when things get serious.