Question about 2000 Jaguar XK

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Engine coolant low

Hi Folks,
My dashboard display is showing 'engine coolant low' intermittently despite the fact that I topped it off with water two weeks ago. When I attempt to clear the error, the red LED remains on. Temp indicator on the dash has remained at mid point over the two weeks, no problems with over heating.
Is the engine coolant water only? Also is it fed from form the pipe inlet under the hood just below the wipers only?
Am totally paranoid about it now and am reluctant to drive it in case I do damage.Would REALLY REALLY appreciate any advice you can provide
Rgds, Gavin

Posted by on

  • GavinDelaney Jul 01, 2008

    Hi D,



    Appreciate the prompt response. I will check the terminals on the level switch as u suggested. I am 100% sure about where the coolant goes in the cooling circuit under the hood but i just wanted to be sure that this is the only access point for it as the damn LED remains on.



    Anyhow, thanks again mate

  • Larry David Sep 13, 2008

    Hi everyone,



    It seems like I am experiencing a similar problem to you.



    I was wondering if I could get someone's advice to the problem I am now have. I own a Jaguar XK8 Coupe '03 and I switched on the engine this morning (fairly normal weather conditions) only to see "Engine Coolant Low" appearing on the dashboard. The temperature gauge on the right was as normal, in the middle and the engine sounded fine. I switched it off for ten minutes and started the engine again. This time there was no message and the gauge was normal. However, I have noticed that on the Engine Coolant temperature gauge red segment light at the top is constantly on. I have topped up the coolant with some water and hear no noises at all and smell nothing.



    Can anyone help / advise how serious this could be? In your experience, do I need to talk to my bank manager to get this fixed, or is it a relatively simple hose replacement?



    I appreciate any help and thanks in advance.



    Cheers,



    Paul



    paul_farquharson@hotmail.com

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  • 225 Answers

Hi Gavin,
I'm no expert on Jaguars, but if there is a "low coolant" warning light when there isn't "low coolant" it may be that the level sensor has got poor electrical connections, possibly due to corroded or dirty terminals, or the sensor may be faulty. If there is a removable electrical connector on the container where you add coolant, that might need checking.

The cooling system should be a mixture of water and "antifreeze / summer coolant". I don't know where you live but the car manual will tell you the correct mixture to use. The stuff you add to the water contains corrosion inhibitors and other chemicals to make the engine last longer.

But there will be several different liquid containers and filling points under the hood and you mustn't get them mixed up!

Coolant expansion tank - where you top up coolant
Windscreen washer liquid tank
Engine oil filler
Brake fluid / hydraulic systems reservoir
and maybe others too.
These should all be clearly identified in the users manual - well worth a read.

If these suggestions do help you solve the problem, please give my reply a rating to help others judge my knowledge / guessing skills.
If they do not, please add a comment with more details so I can try to help you further.
Cheers, D

Posted on Jul 01, 2008

  • Richard Raynor Jul 01, 2008

    Thanks for your reply, and I hope you find the cause of your problem easily. D.

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  • 323 Answers

SOURCE: Engine coolant low

All autos should run a coolant mixture of 50% water, 50% anti-freeze. BMW in particular have their own formulation of anti-freeze they highly recommend you use instead of any other brand.

If your temp gauge is at mid point on a BMW it is a little high. Could be that you have too much water in the mixture and it isn't cooling properly. There is an over flow (usually plastic) which runs out of the radiator. It is here that you replentish coolant. NOT in the radiator.

At this point I'd be more concerned with where that coolant is going. I don't have to add water to my Beemer more than once a year.

Maybe you have a bad temperature sensor. Maybe a bad thermostat. At any rate, at this point I'd bite the bullet and go see the man at the BMW shop.

Better safe than sorry.

Sirwriter

Posted on May 23, 2009

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DTC P1114 - Engine Coolant Temperature (ECT) Sensor Circuit Intermittent Low Voltage/IAT - B Circuit Low Input



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It sounds like you have low coolant in the engine, If your coolant is low you may intermittently have no heat or have none at all. With a cold engine add about a pint of coolant above the full line, then warm the vehicle up to regular operating temperature and shut it off. As the engine cools the coolant from the resevoir should be drawn back into the engine. If after the engine cools the coolant level is lower than where you had filled it to, try this again. The reason for bringing the engine to operating temp is that as the coolant ciculates, if their are any air locks in the system they will be circulated out to the resevoir. If this doesn't work then you may have to change the thermostat. There is a chance that the water pump may not be performing up to snuff but then the engine would be overheating as well. If the coolant is low make sure you keep an eye on it as you may have a leak in the system.

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Intermittent heat is usually the result of a low coolant state. What happens is the heater core isn't getting the circulation necessary to keep the air warm. The irony is that your engine will run hotter when this happens.

To fix this, start with a cold engine and open the radiator fill cap.
Start the engine and top off the coolant.
Let the engine keep running and warm up.
When it begins to cycle the coolant check the level again. Top it off again.
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1 Answer

Engine coolant low


All autos should run a coolant mixture of 50% water, 50% anti-freeze. BMW in particular have their own formulation of anti-freeze they highly recommend you use instead of any other brand.

If your temp gauge is at mid point on a BMW it is a little high. Could be that you have too much water in the mixture and it isn't cooling properly. There is an over flow (usually plastic) which runs out of the radiator. It is here that you replentish coolant. NOT in the radiator.

At this point I'd be more concerned with where that coolant is going. I don't have to add water to my Beemer more than once a year.

Maybe you have a bad temperature sensor. Maybe a bad thermostat. At any rate, at this point I'd bite the bullet and go see the man at the BMW shop.

Better safe than sorry.

Sirwriter

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It actually sounds to me like you're low on coolant. My Jeep leaks coolant and whenever it gets low the temp gauge will go real high and then drop, and the heater doesn't work well. This is because the cooling system of your car is supposed to be a closed system, full of coolant and no air. When coolant leaks out, the space it used to occupy is now occupied by air, which does not transfer heat well. When 'air' is passing through your cooling system, no heat can be transferred from your engine to the heater and radiator, resulting in a hot engine and no heat at the heater. Then when a pocket of water passes through the system, the temperature gauge quickly falls as the water absorbs the heat from the engine. The hot water that cools the engine is where the heater gets it's heat from as well, so when water passes through the heater core, the heater works, but when it's filled with air, it doesn't.

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