I just installed a OBDII based system recommended in another thread. I was going to set temp limits but couldn't find anything in the Jaguar Manual (XKR 2010). I called my local dealer and the service writer didn't know. Couldn't find anything on Google.

Anyone here have any insight?

 

Temp limits - meaning?

You cannot control the car.

 

The 5.0L XKR temp. ranges from 195*F -205*F and is cannot be set by any OBDII device. You will only be able to read various values but will not be able to change them unless you use the OEM Jaguar programming system. Temp value is set by a fixed thermostat. Please be more specific as to what you are trying to do.

 

Alarm limits set at 210` should give you a tiny bit of cushion before something bad happens.

Which module did you end up with?

 

Probably means limits in an APP like Torque. in addition to setting the range of the gauge, can't it be setup so temps outside defined range sets a blinking light?
Sorry, can't check as I have the phone without the Torque app with me.

 

To several of the above: I wasn't expecting the thing to control the engine. I'm simply looking for what the factory thinks is a reasonable operating temp range. I know the idiot light comes on too late as documented by members here toasting their engines a few minutes after notification. That's why I bought it.

So in English units is 205 F a reasonable level? I don't know. I live in a very hot climate, south Florida. I've only had the unit a day. Driving around in city conditions of stop and go, it reads 95C= 203 F. This seems OK to me. And yes, my coolant level is ok.

I'm trying to find out what the Indian engineers think.

 

There are 3 levels of safety with the coolant system. The 1st is the low coolant warning , the 2nd is the high temp warning and the 3rd is steam coming out of the engine. If you shut down after any of these warnings you will not ruin the engine. My new 5.3L chevy truck runs at 210* so I wouldn't worry until you get near 230*F.

 

Tata didn't have anything to do with engineering our cars, even though they bought Jaguar in 2008. The cars were already engineered by Jaguar, with some hints from Ford.

"Jaguar Land Rover has two design centres and three assembly plants in Great Britain. Under Tata ownership, Jaguar Land Rover has launched new vehicles including the Range Rover Evoque, Jaguar F-Type, the Jaguar XF, the Jaguar XE, the Jaguar XJ (X351) the second-generation Range Rover Sport, the fourth-generation Land Rover Discovery, and the Range Rover (L405)."

 

You live amongst the Seminoles. Go ask them.

 

I would set the alarm at about 220 F. You do not want nuisance alarms. This is several degrees hotter that the car should get even idling on a 100 degree day with the fan going full bore. It is still about 20 degrees below the danger zone for the engine.

 

I have an OBD temperature display with alarm and I first set the alarm on mine at 221 F and it occasionally alarmed on hot days (105 F) at stop lights. I live in Tucson and 115 F is not unexpected. I set it up to 225 and have not had any alarms.

In another post someone said the car will give a warning on the dash display somewhere around 245 F. (I don't remember the exact number in the post). This still gives some margin as the 50/50 mixture of coolant should not boil until it gets to ~ 260 F. That is where you will have BIG problems as steam does not conduct heat very well and your radiator cap will release.