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Discussion Starter #1
Evening,

Ive had enough of this car now, after buying this car a couple months ago, albeit advertised with a few issues, that i thought i could fix considering the price i paid.

I have since replaced both maf sensors, put new wheels on it, new winter tyres, ripped off tints and had a major cleaning done. I had to replace a turbo bypass valve (horrible job). I have never been able to lock the car because the key fob battery is always low, changed four times, battery resets done, still wont work. I was learning to live with that until I got in the car today and It wouldnt start..... I now have dsc faults, ebd faults, low keyfob battery fault, gearbox fault etc etc etc.

This car is mental!! Im seriously considering gutting it. Ithink the battery may be gone so im going to pick up a Bosch s5 tomorrow, If I can get the car working im taking it to we buy any car, unless anybody can help..... Ive taken it to jag and 2 specialists, the indies seem disinterested and over worked and the dealers are way to expensive. ANY HELP?
 

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MY 2012 XF S Portfolio Ultimate Black
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For key fob, use Energizer lithium battery. You can buy it from Tesco, Asda, Morrisons. Others had luck with Duracell. Nothing else would work. I have been through this.

The errors you get is normal after having a dead battery. It could be the central junction box though. The screen washer pump is faulty and can push the water into the wire insulation which can reach the electronics and damage it.

Have you replaced the bypass valve yourself?
I guess the battery specifications should be programmed and learned by car. a clone mangoose pro is a must for car like these. Trust me I have one of them.
 

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Sounds like a pain, I had to a little thin card board behind my battery to make it contact correctly...

Mines getting a longer list of annoyances, rust under the window, shitty bumper repair paint now peeling, new tyres needed all round, suspension feels horrible bla bla but I've paid it off so every mile is nearly free compared to replacing it... I want a 750 I've been looking haha

Sent from my Pixel 4 XL using Tapatalk
 

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PS. I rebuilt the engine and changed intake manifolds on top of some of the issues mentioned above. How about that?:cool:
 

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Discussion Starter #5
Seems you have skills Hamed! I’m actually gutted, always wanted an xf but this is disappointing me badly!
 

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I have since replaced both maf sensors, put new wheels on it, new winter tyres, ripped off tints and had a major cleaning done. I had to replace a turbo bypass valve (horrible job). I have never been able to lock the car because the key fob battery is always low, changed four times, battery resets done, still wont work. I was learning to live with that until I got in the car today and It wouldnt start..... I now have dsc faults, ebd faults, low keyfob battery fault, gearbox fault etc etc etc.
The wheels, tyres, tints, & cleaning presumably you knew about so its not worth junking it for them. The battery fob might be poor quality replacements or the tabs being displaced, they need to be checked. As for the latest faults they are likely to be due to the main battery being low as Hamed said, a good charge or a replacement main battery may solve it all.
 

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Evening,

Ive had enough of this car now, after buying this car a couple months ago, albeit advertised with a few issues, that i thought i could fix considering the price i paid.

I have since replaced both maf sensors, put new wheels on it, new winter tyres, ripped off tints and had a major cleaning done. I had to replace a turbo bypass valve (horrible job). I have never been able to lock the car because the key fob battery is always low, changed four times, battery resets done, still wont work. I was learning to live with that until I got in the car today and It wouldnt start..... I now have dsc faults, ebd faults, low keyfob battery fault, gearbox fault etc etc etc.

This car is mental!! Im seriously considering gutting it. Ithink the battery may be gone so im going to pick up a Bosch s5 tomorrow, If I can get the car working im taking it to we buy any car, unless anybody can help..... Ive taken it to jag and 2 specialists, the indies seem disinterested and over worked and the dealers are way to expensive. ANY HELP?
Does seem to me as if the problems may well not be as major as you seem to be thinking. The key fob sounds as if it needs a decent battery and I would highly recommend you also replace the battery in the spare key as well. They have an uncanny knack of failing as a pair. The main battery sounds like it's fooked and needs changing pdq or perhaps a charge to see if that resolves the multitude errors which I suspect it will. Be aware if the battery is indeed past its best a charge will likely be effective only as a very short term solution. Obviously you seem to have a battery organised and again make sure it is fully charged upon installation.
I do wonder if in reality you are now nine parts there and just need to go a tad further before you end up with the car you wanted.
 

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As Brian just said don't give up just yet, get the battery sorted and get all of the fault codes reset BMS reset as well. If still iffy check the CJB loads of info on here. Even though it looks as if there are lots of faults it might be just one or two.
Stay with it, the guy's on here will get you through it.
 

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Discussion Starter #9
Cheers gents, I’ll be putting the new battery on this afternoon and I’ll grab another key battery for both keys and I’ll update you, thanks for the help so far
 

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I'll also reiterate that for all those faults to suddenly pop up sounds like a classic battery issue.

Bit of big post this, but it would be a shame to see you give up the car. I don't know what you've already checked/know about so apologies in advance, this is just some of the stuff I've learned from the forums etc and my own experiences:

There are a few inherent design flaws which have easy fixes and can save thousands of pounds of repairs down the line. Obviously one shouldn't be expect to have to trawl forums to find these as the flaw shouldn't be there in the first place, but from my own experience almost every car has its issues. Didn't Honda have an airbag problem and Toyota/Lexus were trying to kill people with their dodgy brakes? My brand new BMW needed a new oil sump after 2 years of age and because of the X-Drive it was apparently a huge job (and expensive to me were it not under warranty).

First thing I would check is the three large multi block connectors at the furthest away point in your main fuse well in the driver's footwell. Check for corrosion of the pins, if you can't get in to see properly you can stick your phone in and take a photo to check. If there's no corrosion then happy days, but either way you need to get the front o/s wheel off, pull back the wheel arch cover and splice the washer pump wires and insert some form of water block. I used a bit of solid core and a few push connectors. There's a thread on here with lots of detail.

Next up, being the saloon you need to check for water ingress into the boot well. It comes through a vent in the rear quarter panel I believe where the seal comes loose. There's threads on here on how to fix it also. I've got a Sportbrake so instead of a vent I had water coming in through the boot strut bolt and soaking the fuse box in the boot! I only knew because a tell-tale "Rear Air Suspension Fault" message appeared and I remember reading a post online about this indicating water getting in through the strut bolt.

Another thing I would check is your MAP sensor. It is right on top and quick to remove. Look to see if it's fouled up and if so then spray it with electrical contact cleaner only. Don't make any contact with the sensor area. I would then do an oil and filter change with good quality C1. A fouled up MAP may be an indication of poor oil used in the past or other problems, but there is a suspicion that a fouled MAP sensor may be a contributing factor or catalyst towards the infamous split inlet manifolds.

It definitely pays to keep an eye on the forums etc, read about other people's problems/fixes and pop them into your long term grey matter for when your time comes. But in the grand scheme of things, it's usually just small niggling issues which irritate and the XF in general is actually quite reliable where it counts.

If it helps, I've had my car for almost two years and from memory here's the problems:
  • F/N/S door lock actuator (fixed under warranty)
  • Rear boot latch (fixed under warranty)
  • Battery
  • Alternator
  • Rear flexi exhausts (not sure if they were necessary though)
  • Caliper slide pins sticking
  • I've got a code for the rear wiper but it works fine
  • Central locking failed after prolonged battery disconnect (£60/20mins reprogram job)

They are pretty minor really, although I would have expected an alternator to last longer than 7 years / 70k miles. But, I suspect the alternator works hard because it charged my battery up in record time despite the short journeys I do. The central locking failure is just stupid, but thankfully the local indy is wise to it. Incidentally, he is also insanely busy. I hope that isn't an indication of the brand's reliability haha

Expensive maintenance stuff so far:
  • Timing belt and water pump
  • Transmission fluid + sump/filter

Expensive Problems potentially avoided had I taken them into Jaguar:
  • CJB corrosion from washer pump capillary action avoided by doing my own fix
  • AJB failure due to water ingress from boot strut bolt coming loose avoided by resealing captive washer
  • Serviced all caliper slide pins (avoided replacing calipers)
  • Keeping MAF sensor clean and possibly avoiding inlet split (I'm going to regret saying this)
  • I put my foot down regularly to ensure revs go over 2,800 rpm and hopefully avoid secondary turbo actuator from seizing
  • I change the oil every six months to keep the engine and crank in the best possible condition

I only use good C1 oil, good quality oil filter and BP Ultimate. I also shove a tin of Archoil AR6400-D Max in every 5,000 miles. I change the fuel filter every year and like the oil extraction tube and oil filter it is very easy to access and quick to do.

I hope this helps somewhat. :)
 

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Discussion Starter #11
Gents, I’ve just put this new battery on, fully charged and ready to go, got in the car and now it’s telling me “unable to find smart key” tried the spare both with another new battery in!? Wtf is this car? Any help please?
Before anyone asks, I was extremely careful, the pos and neg did not touch, nor did they touch anything else, I’ve just disconnected to reconnect again in half hour or so. Thanks
 

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Have you tried offering up the fob(s) to the part on the steering column?
But to be it's sounds like you've got a BCM problem :(
 

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Gents, I’ve just put this new battery on, fully charged and ready to go, got in the car and now it’s telling me “unable to find smart key” tried the spare both with another new battery in!? Wtf is this car? Any help please?
Before anyone asks, I was extremely careful, the pos and neg did not touch, nor did they touch anything else, I’ve just disconnected to reconnect again in half hour or so. Thanks
I had this after my battery went extremely flat in lockdown. You have to hold the key in a little slot thing near the steering wheel. Don’t know if you’ve got the same as mines a 2009 xfr
 

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I had this after my battery went extremely flat in lockdown. You have to hold the key in a little slot thing near the steering wheel. Don’t know if you’ve got the same as mines a 2009 xfr. Hope it works for you...
 

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Gents, I’ve just put this new battery on, fully charged and ready to go, got in the car and now it’s telling me “unable to find smart key” tried the spare both with another new battery in!? Wtf is this car? Any help please?
Before anyone asks, I was extremely careful, the pos and neg did not touch, nor did they touch anything else, I’ve just disconnected to reconnect again in half hour or so. Thanks
There is pin that should be upright touching the side of battery.
 

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Got to say I sometimes drop the key between my legs and the dash often reports "key can't be found". I just simply place it in a more obvious location and hey presto it always gets registered. Just wondering where you might be placing yours? This latest problem must be something simple.
 

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Discussion Starter #17
I put mine in the centre console normally closing to the dash. Ive tried sticking the key next to the slot that used to be, and on the side and underneath of the steering column to no avail. Genuinely at a loss now?
 

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Discussion Starter #20
I cant lock or unlock the car bud, already had a smart key error before all these issues
 
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