Looking at a 2015 R with ~27k miles and the dealer sent me this diagnostic history with the PPI (the dealer I had do the PPI is not the seller). Just wondering if anything sticks out to anyone as a red flag/negotiation point. The car is currently throwing the battery related codes, but that's because the batteries are the original 2015 units Seems like a lot of communication drop outs, but I think those could be do to the battery condition, I'll take as long a test drive as I can to see if anything pops again.

I had thought I heard a small intermittent tick from the top end, but they say they didn't find anything. I've scrounged enough knowledge to know that I don't know if the 2015 R has the problematic chain/guides, so I'll peek through the oil fill and see what they look like. Thank you

 

Going to self reply here because the forum offers you Related Topics that are actually relevant (can't be AI ) :
https://www.jaguarforums.com/forum/x...-codes-248168/

Some of their codes line up with mine, maybe what I'll do is see if I can borrow an OBD tool and clear everything before the drive and check again after.

 

Not a daft idea but be aware that many codes are "2-trip" i.e. need 2 engine warm ups to flag. (Cold to hot engine, so just turning engine off is no good.)

Some can flag immediately of course.

Also, clearing codes also clears all OBD monitors (often needed for smog) and each cleared one suppresses many codes until it re-sets.

An ordinary OBD tool will at most clear codes in the PCM (aka ECM) - the "main" one for the engine.

A lot of the codes shown look old and are likely irrelevant, which is good news.

 

Thank you, I didn't know all that.
Yeah I don't think any besides the known battery related ones are currently set (I don't know how to read those status symbols, just going off the dash warnings I saw), but they are pretty recent as far as mileage goes and there's a lot of them. On the carfax it was brought in for a service with 26,197 miles, right after Event 2 @ 26,193, and that was shortly before the vehicle was sold to the current dealer with only about 1500 additional miles put on it. It looks like the car has been throwing codes since 26,193 miles, they drove it another 1,500 miles over 6 months and had all the rest pop off, then sold it to the dealer.

 

One thing to consider is that the car gets very little use. Only 27K miles since 2015. That's 2700 miles a year. It was sitting most of it's life so far.
So I would expect all those codes and errors because of voltage fluctuations and age as you posted above. So not a red flag for me...yet!
If you get the car I would get a CTEK battery maintainer right away and make sure the car is always plugged in.

Your wise to swap the battery and I bet that's the source of all those codes.
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Thank you, maybe I can convince my self it is just the batteries ...

I'd really love it if the dealer would swap them so I could do a test drive and end at a Jag dealer to check codes again, but they won't do that unless I put down a non refundable deposit. So the car is being sold with all these intermittent codes; is there a wiring problem? Who knows, roll the dice, buy it and find out.
It's a negotiation point I suppose!

 

If the car is at a Jaguar dealer is there any warranty? Then you could replace the battery and if you have further problems at least you could take it back to the dealer.
These type of problems are very common and yes believe it or not the vast majority of the time it is the battery.
I have been surprised by the wide array of problem that immediately go away when the battery is replaced.
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No it's a 2015, out of warranty.

At this point I'm almost glad it's got old batteries, I can argue we can't know if it doesn't have other issues