I have now had my XE for 6 months and it’s an awesome vehicle. I have one problem where initially the fan came on when I parked the car. Now it even comes on while driving....and it’s not hot weather.
when I told Jaguar about it some 4 months ago they said it’s quite normal. I rang them the other day saying it’s now coming on while I’m driving and they said it’s not normal and it needs a software update so I’ve booked it in for the first time next week.
Anyone experiencing similar?

 

Wow...no one has had an issue with there cooling fan coming on, the way jaguar spoke it’s not unusual.

 

Took it in today and it was a faulty switch, easy fix, however, 10 to 15 days wait for one to come from UK.

 

Just a follow up for info.......NEW WATER PUMP....switch in water pump faulty..

 

So a $5 switch in a water pump means the whole pump must be replaced ! Something wrong there surely ? We are rapidly getting to the point where repairs will become grossly and disproportionately expensive due to lazy design practices.

 

Replacing whole assemblies, rather than repair, has been pretty standard for many years.

In fairness to the makers, cars are a lot more powerful. reliable and longer-lived than 30-40 years ago.
I remember some of my 60's and 70's cars that were repairable - regularly!

 

Hmm, what switch resides in the water pump that would interact with the cooling fan? Typically the thermostat would trigger the cooling fan and from memory assuming Ingenium engine this is located on the lower right side of the radiator pack.

 

Looks like it’s not over yet! Last month or so fan has been going crazy again, drive for a long time and nothing sometimes drive and not even up to temperature and electric fan goes crazy. Took it back to dealer who checked and said there’s a new bulletin out that the water pump has to be changed again. Also said he needs to contact all customers who have just had their water pumps replaced recently to come back again. The majority of 20T engines with this issue have been in the F Pace (I’ve been told).
I have also had issues with car not being able to start with all blank screen and everything out only message on screen that key not able to connect. New software upgrade installed....we’ll see what happens.
Just for info, when the car would not start or do anything I locked and unlocked the car whilst inside and bingo all good.

 

Did they repaired in both cases in warranty?

 

Yes......I’m waiting for the part now.

 

Second water pump replacement with latest software update.....we’ll see how it goes.

 

Result!

Lets hope it's for the last time

 

Your not wrong!.....fingers crossed, back four times in 10 months...that’s enough. On the bright side it’s a beautiful car to drive and hasn’t affected drivability, also great people at the service centre and loan car every time...no complaints.

 

In their write up they identified a noisy cooling fan. Did they do anything to rectify that? Not sure i understand the relationship between that and a water pump.

 

Noisy meaning the fan came on when the engine was not hot and stayed on when engine switched off.
The fan was not exceptionally loud. I was told the water pump in some way controls the fan.

 

"Noisy fan" is a very odd way to describe the fan staying on when the engine is switched off or not hot. So this is what didn't make any sense to me.

I don't have documentation for the Petrol, but I would reason that the engine cooling system operate in a similar manner to the diesel. Under the scenario which you describe of the electric fan running when the engine is cold, no the pump would have no involvement with this. This would either be a software fault in the ECM, or more likely a coolant temperature sensor fault. The electric fan receives a PWM signal to modulate its speed from the ECM. The ECM uses the Engine Cooling Temperature sensor (ECT) as its means of determining the engine coolant temperature and its main means (other modules are involved) of deciding at what speed to regulate the fan. If the engine is not running and is cold, the ECT sensor or faulty software are the only things which could cause your electric fan to switch on. The ECT sensor is located on the lower right hand side of the radiator pack (or left hand side if you're looking into the engine bay). It has nothing to do with the pump.

The coolant pump influences the operation of the electric fan when the engine is running. The pump is designed to provide the minimum flow rate to achieve engine temperature regulation, this is in order to reduce engine load and increase fuel efficiency. It has an internal valve which regulates the coolant flow rate. So if the engine was running, a defective coolant pump could reduce coolant circulation increasing engine temperature and causing the fan to run, sure.

 

The fan was staying on when running and switched off, as well as the pump replacement they updated the software which I’m told took a while. Maybe that’s what the latest bulletin from Jaguar was about, I’m not that computer savvy so in my mind it appeared to be a temp sensor but I was left in the hands of Jaguar. What you say makes sense.

 

Well, one month has gone and electric fan hasn’t come on...looks like the last fix has it sorted.

 

If they were lazy, they would've went with a traditional waterpump design, no?

These types of issues are almost always attributed to poor manufacturing and poor quality. If the design itself was flawed, they would have installed a re-designed/updated part.

However, you could argue that a 'better' design would eliminate this failure mode altogether - or at least default to a 'failsafe' failure mode where the pump always coolant to flow freely, rather than restrict and risk overheating. Like a thermostat - stuck open won't destroy an engine ... but stuck closed, well ...