Hi,

I just bought a 2005 Jag S type r. After the purchase I noticed the Pats Led (security light) on the Dash was not working.

Well I took the Pats Led Panel out of my 2003 Jagur StypeR (which I know is working) and plugged it into my 2005. Now the LED in the 2005 is solid RED. When I turn the car on or off it just stays solid red. It has been that way for 2 hours.

Looked at the Pats flow chart and could not find anything about a Pats light that stays on.

Any suggestions.

 

Well it's not acting right but do you have any problems? Like starting problems? If not it may be a wiring problem to the light.
I have not run across before this so I am guessing.
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I guess I should have mentioned this..

The car starts and drives fine.. I have two keys for the car and they both work. I can lock/unlock the car with the remote, I can pop the turnk.. The LEd just stays solid red..

I have tired unplugging the battery to reset the computers but as soon as I connect the battery back up , it turns on and just stays solid, Whether the cars running, the alarm set or not set, the PATS LED is just on.

The main battery for the car is new from the dealer about 4 months old. Also one of the keys is new from the dealer.. Of course when I was at the dealer I did not even pay attention to the security(pats) light, I only noticed it when the 2005 was sitting next to my 2003. that when I noted the Pats not working on the 2005, and changed it out with the 2003 PATS light.

I am assuming that is why the original burnt out. There is gotta a be a way to turn the LED back to normal operation?

 

maybe the original pats light is not broken, maybe someone discoonected cos it was on all the time.

 

Well, the orginal Pats LED in the 2005 was not disconnected.. I unplugged it myself and plugged the one from my 2003 in to test it. As mentioned when I plugged in the 2003 PATS that i Know is working, it is staying solid red(lite).

 

Is the panel very very simple - no ICs - so that you have reason to believe swapping it in is OK? Otherwise you could be doing something rather unwise!

If it is simple, measure the volts on the original panel and figure why the LED is out.

Generally, it's a really bad idea to swap electronic parts like this - a caution to future thread readers! - because the cars have all manner of changes year-to-year.

 

In the panel ( which is the defrost panel up by the front windshield) there is an IC. The bubble on the dash in the 2003 and 2005 has the auto-head lamp sensor and the Pats Led light in it.

In both cars when I look up the part number via JEPC and it is XR82803. It is not vin or year specific.

I went a step further and called the jag dealer and the part for the 2003 and 2005 is the same part number. I will connect a multimeter and check voltages on both cars and get back to others for suggestions.

 

If that's right and the one you swapped in is OK then something's turning the LED on. Either you have some sort of wiring (or other, such as a transistor) fault or it's being deliberately commanded on. I believe nothing ever does that - it would always be self-tested first - so looks like a fault. May not be the easiest to DIY.

 

Yes, the more I think about it, I feel it is a short or something in the pats is keeping the light soild for some odd reason.

I might have to take her in to see what is causing the problem.. going to have to take a look at jtis and see where the wiring from the PATS led goes to , unless someone one here knows???

 

Thread revival. Just bought an 05 as well and the red light stays on all the time.

Did this issue get resolved?

 

No (last login was 2013). Go troubleshooting.

With so many posts you no doubt know the workshop manual etc are free downloads.

 

I am aware. I have an XKR and the S-type is new to me. I went into the diag screen on the cluster and it said "bad read address" (5C). I can't find any additional info in the books what that means.

 

Did you ask in the XK forum? The cars are significantly different but also someone may know what that 5C is. Oh - do you mean a car NOT in your signature and it's an S-Type?

My guess would be an SCP or ISO9141 address, except none of the addresses I have for modules is 5C.

Or, a PID or the like (e.g. mode 1 PID 5C is get engine oil temperature).

If you mean part of ETM then just ignore it as various parts don't apply on the car.

I'd want IDS/SDD or the like and see what it reveals. You may have to take a lot apart so some ideas about what & why would help you.

Does the 05 (S-Type?) otherwise appear to work?

 

Yes an S-type. Hence the reason I'm here.

The S-type was just purchased for my wife. 05 with 57k on it. Person just replaced the battery. Voltage on the IC shows 11.7 even after I charged for 24 hours. Shows 12.8 at the battery. This is a new type for me in the Jag range. It's very different in a lot of ways to the XKR. The car runs and drives just fine. That darn light just stays on all the time. Never shuts off. I'm unfamiliar with the PATS system but trying to learn. I'm no amateur. I've changed the rear diff to a Quaife in my XKR, installed the ACM myself and done all the service. Rebuilt more engines than I care to remember. Here's the PATS readout.


Rolling through the menus the voltage was at 11.1 at the IC with a battery voltage of 12.25. A drop of a little over a volt. Are there issues with the fuse panels in the back in humid environs? Car is from Florida.