Any ideas guys? ... I have just acquired a 12 year old S-Type, 3L, V6 Sport Petrol. Def love at first sight! Full cranberry leather interior, Sat Nav, AC, Really is a lovely car with some serious POWER! However, it was bought of a family friend who lost enthusiasm for it because it developed some faults. After referring her to my mechanic a while back, he looked over it and assisted with the problems a year or so back, however they were not resolved. After a discussion with the mechanic (only a few weeks back) I said do you think I should go for it and try to get the issues resolved. He was confident it could be done. The car keeps going into 'Limp home mode', mechanic said his jag boys told him to clean out the TPS, if not resolved, replace it. We have done that last week (full replacement), only for Limp mode to still be a problem. Jag is back with him, think he said must be a faulty ECU somewhere. I'm hoping it not going to be a big financial burden. Wish me luck!

 

I'd find a competent jag indy (or else DIY). Much cheaper in the end.

 

My mechanic is a good guy, been with him over 10 years. He has jag indy's local who can help. He put his computer on my car and it got rejected. Hence the reason its gone to his jag boys. fingers crossed!

 

There's no need to guess and assume what might be wrong or worse still, change parts at random. This will cause it to be the financial burden you're trying to avoid.

Sounds like your biggest problem right now is a mechanic that doesn't know where to start. Hopefully the jag indy will be able to read the codes. Not much point in speculating till then.

 

I do not understand why his OBDII reader would not read the codes but we will see what the Jag Boys find.

 

I also agree with the above.

Your problem is the mechanic. He does not know what he's doing regardless if he's a good guy or not. Get the codes and go from there. No other way to fix the car.

If you can't do the work your self I would have a nice fat bank account because you will need it. That's the trade off with the S Type. Nice car value if you can DIY the repairs or a money pit using the dealer because you have already wasted a good bit of time and we don't how much money to get nothing fixed!

This list has all the V-6 problems documented. Start reading and plan to fix them all. They are not real expensive and the list is not too long but they all go together.
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Being 12 yr old you need to be aware that's when major changes were made and which side of VIN M45254 you are because the faults are rather different.

The car is standard OBD II so any mechanic with a tool that won't work is stuck in the dark ages

Think of it as a network of computers with an engine etc attached. Spanners are not where to start and they're not sufficient either.

 

Mine is the same - my OBD scanner won't read the codes although it will show live data. I'm going to take it to the dealer to get them to read the codes and then I can tackle to odd problem or two that it has.

 

Thank you guys! Really appreciate the responses. I was getting the No Park break, Engine Fault, DSC info unavailable etc. All lights flash up on dash then limp mode kicks in. I also noticed that I get the flash of the battery light a few times before No park break etc. I am expecting a call this week after a trip to the jag boys down the road. Fingers crossed.

 

Sounds just like a failing battery! Are you certain it isn't?

The computers won't tolerate a poor battery.

 

Goodness only knows what dumb software can communicate to read live data but not codes. It's the same protocol on the same wires to the same module FFS.

Must be MS OBD...

 

It had a brand new battery only a few months back. That I know because I have the receipt for it.

 

Hi, where do I find the list of common V6 problems?

 

Check your fuses one of them powers the OBDII reader.

 

It's the Android OBD tool provided by police666 in the link in his signature. It works perfectly on my Landrover Discovery so the problem appear to be with the S-type, not the scanner

 

Not a chance. First, your Disco may well have quite different protocol (OBD includes 3 main ones), second the US fines in multi-million amounts any car maker whose cars don't respond properly to their Legislated Diagnostics. The Jags are fine and Jaguar not fined.

 

Well, as I say, it's the Android software that police666 directed me towards and therefore I assume that it works for him (and other users). The bluetooth scanner connects OK to my phone, the scanner works on other vehicles (my wife's Kia, too) and therefore the only possible remaining variable is my car.

The software may work OK with other S-types but that's not to say that my car is working properly (despite the live data part being OK). It's that last part that makes me think that there may be some sort of software problem within the PCM/ECU.

So, I'll take a trip to the dealer and layout the cash for half an hour on their scanner.

 

Or buy your own - the Mongoose JLR is cheap now.

Or try some other software.

If you're using a clone elm327 we've seen quite a few odd faults with them.

 

If you spend some time and read the sticky threads at the top you will start to see what is needed. The how to section has a number of items for the 6 cylinder cars.

Don't forget at this time you might as well go ahead and swap the coils/plugs and intake gaskets when you pull things apart. Just do it all at once.
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Fellas, mechanic said he maybe at a loose end. Will know more when I am face to face with him. He has changed the alternator because of battery light and the jag boys have reset all the faults. He has said he can not do anymore for me if the car keeps going into safe mode :-(