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Car Dead Afrer 6 Days, Paracitic Draw, Crankcase Breather Pipe Hissing Noise


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Hi all,

 

When I purchased the car a few months ago, I was told by the dealer I purchased the car from, that the battery was 'brand new' only to find that when I parked it for 3 days, fri, sat, sun and then tried to start on the Monday, that car didn't have any power at all, not even enough to open the emergency tail gate to access the dead battery, what a pain that was, If anyone has that issue, I suggest accessing the positive and negative hidden away in the back seats as none of the other methods worked for me,

 

anyways, ended up replacing the battery, also bought my self a plug in voltmeter to check my battery voltage every time I enter the car and drive it to work, most of the time it goes like this, end of drive it sits around 12.8, come back around 8 hours later and the car is sitting around 11.9v the alternator reading switched on is 14.2 usually, so first thing I think is Parasitic drain,

 

I made the car think the doors and bonnet are shut, I used a screw driver for this, then locked the car and let it go to sleep, I then started work an hour later using the AstroAI DT132A Multimeter,

 

I know people tend to try disconnect the battery to see how much draw there is, however I don't have another multimeter and I know there is a drain so I skipped that entirely, I worked from front fuse box to the passenger side fuse box, let me tell you that one was an absolute pain to access and get accurate readings, then tested the rear fuse box hidden behind the seats,

 

I spent a while doing this, even checking the fuses again once more and found absolutely nothing, the only thing that came close was a 5 amp brown fuse on the passenger side fuse box, because of course it had to be the hardest to get to one, and found it draw 1.4mv then drop to zero, it stayed like this for around 10 seconds or so, it was on the bottom row and 5 along I'm sure, I tried to replicate it again and again and couldn't really, I put down to me not making a good connection on the fuse, as when I place one side and not the other I get some kind of reading but when both are placed it come to 0 Mv,

 

I going through all of fuses again today, took the car out for a 45min run once more before I start but the battery drain I so significant I wouldn't be surprised if it dropped to around 12.2 when I eventually start work,

 

If I cant find it now I have no clue what to do now, Id like to ask though, has anyone had a similar problem, if they did what was the cause and was it a common issue with these cars because I honestly cant find a single forum with this kind of issue, it's going to be a major problem in the winter and quite honestly, taking it to a garage is a last resort for me for this kind of thing, however,  I will be taking the car to a Jaguar specialist for a major service which is due near October time, I will be taking it here https://www.prestigejaguar.com/ so worst comes to worst I will have to ask them to take a look at it.

 

as for the crankcase breather pipe that's hissing, again was sold to me like this, I tried to look up the part only to find that it has been discontinued, wonderful, the only thing I could find, which apparently fits the XK, is this part number here AJ811728, instead of plastic, it now looks like a rubber hose, not quite sure though, I hope this is a viable replacement as I'm currently searching for one at the moment,

 

 

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53 minutes ago, RJMcGrory said:

Hi all,

 

When I purchased the car a few months ago, I was told by the dealer I purchased the car from, that the battery was 'brand new' only to find that when I parked it for 3 days, fri, sat, sun and then tried to start on the Monday, that car didn't have any power at all, not even enough to open the emergency tail gate to access the dead battery, what a pain that was, If anyone has that issue, I suggest accessing the positive and negative hidden away in the back seats as none of the other methods worked for me,

 

anyways, ended up replacing the battery, also bought my self a plug in voltmeter to check my battery voltage every time I enter the car and drive it to work, most of the time it goes like this, end of drive it sits around 12.8, come back around 8 hours later and the car is sitting around 11.9v the alternator reading switched on is 14.2 usually, so first thing I think is Parasitic drain,

 

I made the car think the doors and bonnet are shut, I used a screw driver for this, then locked the car and let it go to sleep, I then started work an hour later using the AstroAI DT132A Multimeter,

 

I know people tend to try disconnect the battery to see how much draw there is, however I don't have another multimeter and I know there is a drain so I skipped that entirely, I worked from front fuse box to the passenger side fuse box, let me tell you that one was an absolute pain to access and get accurate readings, then tested the rear fuse box hidden behind the seats,

 

I spent a while doing this, even checking the fuses again once more and found absolutely nothing, the only thing that came close was a 5 amp brown fuse on the passenger side fuse box, because of course it had to be the hardest to get to one, and found it draw 1.4mv then drop to zero, it stayed like this for around 10 seconds or so, it was on the bottom row and 5 along I'm sure, I tried to replicate it again and again and couldn't really, I put down to me not making a good connection on the fuse, as when I place one side and not the other I get some kind of reading but when both are placed it come to 0 Mv,

 

I going through all of fuses again today, took the car out for a 45min run once more before I start but the battery drain I so significant I wouldn't be surprised if it dropped to around 12.2 when I eventually start work,

 

If I cant find it now I have no clue what to do now, Id like to ask though, has anyone had a similar problem, if they did what was the cause and was it a common issue with these cars because I honestly cant find a single forum with this kind of issue, it's going to be a major problem in the winter and quite honestly, taking it to a garage is a last resort for me for this kind of thing, however,  I will be taking the car to a Jaguar specialist for a major service which is due near October time, I will be taking it here https://www.prestigejaguar.com/ so worst comes to worst I will have to ask them to take a look at it.

 

as for the crankcase breather pipe that's hissing, again was sold to me like this, I tried to look up the part only to find that it has been discontinued, wonderful, the only thing I could find, which apparently fits the XK, is this part number here AJ811728, instead of plastic, it now looks like a rubber hose, not quite sure though, I hope this is a viable replacement as I'm currently searching for one at the moment,

 

 

Ross

Did you report the dead battery to the dealer and ask him to replace it as the car was sold to you as having a new battery.

Parasitic drain is quite a well known problem with Jaguars.

The best approach to it is to purchase and buy a CTEK MS 7 or 10. Being a very well used charger and re-conditioner by many Jaguar owners. I have an MS 7 and use it very regularly for a minimum of 24 hours , often longer,  when ever I am not using the car. It does seem to be the answer to the problem and solves many of the yellow warnings and codes that readily appear once the battery gets slightly low.

Best Wishes and Regards, John

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It’s more than likely that your “alarm chirp sounder” may be the source of the draw.

It is underneath the drivers side bonnet catch.

A CTEK will only mask the problem until it’s resolved.

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Thank you for the replies, after searching for a while in all 3 fuse boxes I came to one that was rather suspicious, it is a blue 15 amp mini fuse located in the rear seats, it was showing a draw that fluctuated between 0.1 to 0.2mv, this is around 21 to 42 milliAmps draw, according to the owners manual, this is the 'IHU, supply' 'F21' Ive tried looking this up online but I cant find any results on this, it looks to be the infotainment, I have pulled the fuse and now the screen doesn't switch on along with most infotainment buttons, the fuse itself looks like its seen better days, I will see if the drain persists with the fuse removed, if so I'm not quite sure,

 

as for the alarm chip sounder, I wasn't even aware I had one, when I lock the car with one press, all lights flash once quickly with no noise, double clicking the key has the lights stay on a little longer then go out, I've noticed that if for instance I open the car door when the car thinks its locked, all indicators will flash but there is no noise at all like you'd expect,

 

as for the CTEK charger yes I really should get one of those, I do drive the car every day as a daily commute to work and back, though I think whats best right now is to fix the fault itself,

 

Kind Regards,

 

 

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Just out of curiousity, is there a fuse of some kind I can pull to see if this is the draw I'm looking for? I'm going to see what my voltage is at tomorrow, if it hasn't changed then I'll go sorting out the alarm chirp.

 

Like I mentioned above, when the car alarms, when I'm inside and I've locked the car, only the lights flash, the horn doesn't sound at all nor does the chirp, is there some way of reactivating this again, if so what are the steps to do this ?

 

When I double press the key fob or car door, it does not make the noise either, I've done some more digging and I have now seen a few people with the alarm chirp issue, much of them you have replied to, you've been a great help,

 

Kind regards, 

 

 

 

 

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