I went out this morning to start the car. Smart key on my belt as always, step on the brake and press the START button...message comes up on the info center "smart key not found...insert into slot". So I open the console and open the little door to the slot, remove the fob from the key and place the fob into the opening and press down. Hit the start button again and car starts...Remove the fob and button up the console, shut the car off, wait a minute. Start car again and it starts...shut it off, try it again...smart key not found. We only have the one smart key

Any ideas what is happening?...is there a quick fix or do I need to go to Jag?

 

UPDATE: When in doubt read the manual!

I did and found it may have been a low battery in the fob. Manual gives part# of battery CR2032....sounds familiar so I look at my toll pass. Same battery, put in the new battery in the fob.....car starts right up, no error message now.

 

doh!

 

Not quite the word I used....lol

 

Yeah low battery in fob will do that. Mine doesn't like being near my cell phone in my pocket and I get that message until I move one or the other.

 

Hey, keep us updated and verify it was from the dead keyfob battery I am glad so far because it seems there is nothing major

 

I know I will run into this,thanks.

 

That was it, dead fob battery and no issues starting it now.

 

You can pick the battery up at Radio Shack, the owners manual will tell you how to take the FOB apart, pretty easy. Just make sure you put the battery back in correctly or you'll be taking it apart again...don't ask how I know this...lol

 

I agree that the fob battery is the likely culprit, but you can also try one other thing when starting: instead of first stepping on the brake, try pressing the start button first and then the brake pedal. (The opposite of my LS460). This was recommended to me by my Jaguar service advisor when my car wouldn't start when I picked it up after service. He explained that pressing the brake pedal inadvertently more than once pumps the brakes which increases the distance to the start interlock switch thereby requiring really heavy pressure on the brake pedal to make contact and start.

 

^ I'll keep that in mind, Thanks!

 

Tried docking smart key for first time ever, have had car for a year, it got stuck in dock, eventually got it out after i turned car off, now smart key not working, getting"check smart key" and "remove smart key" msgs, cant start my car, only have the one smart key, ayaaaaaaaa, someone pls help me

 

Take the smart key with the metal key portion in place, open the sliding door to the location, insert smart key, metal key and ring portion to the top, buttons on the smart key facing towards drivers seat. insert, car will grab it and pull it into place on it's own...brake pedal on, press start button....to remove, shut car off, press down on top of smart key, car will take over, release it and raise it up, simply pull out by the ring on top of the smart key.

Hope this helps...

 

No somehow docking this key screwed everything up, Jag had to fly in two new keys, only had one, and still couldnt program the new keys! Theyre waiting for techline to give them the next steps, I have no idea whats going on

 

The smart key backs should be replaced on the older smart keys for xf/xk.
Xf vin r00001-r53809
xk vin b12812-b34241
the backs do not hold the battery securely all the time leading to smart key not found even with good batteries. Jtb00075
smart key low housing part number c2p17158

 

When I bought my car, it only had one smart key. And when I drove it, I noticed that the odometer didn't change. After getting the car and leaving, the lost smart key was in the dock. Took it out, mileage then showed what it really was. About 1000 miles more than what I bought it at and what showed on paperwork.

 

Sorry about resurrecting an old thread, but is there any way to determine if my smart key has already had the C2P17158 upgraded battery cover? Seems to be operating ok at the moment, but if I can pickup the repair piece for only $10-15, that's certainly better than being stranded someday. I've taken the unit apart and looked for a part number, but don't see anything that would indicate that I've got the upgraded version. Is anyone familiar with what the difference might be and what I should be looking for?

 

Just like the car battery being a sensitive issue these FOBs dont work on low batteries!!! Ive had my fob batteries replaced several times for same thing.

 

Well, when I got this car I had the "Key not found" message, but then I was getting all kinds of crazy messages because the battery was deadish. I saw posts about the fob battery early on and I happen to keep fresh CR2032 batteries around, so I just went ahead and replaced the battery (and also replaced the main battery in the car). It's been ok, but I'd like to be proactive and be sure my fob was upgraded at some point.


Is there any way of knowing, by looking at the fob, whether the upgrade was done? Visually, the cover that holds the battery looks fine, but I suspect there was some design change in the improved fob cover piece... anyone know what the distinguishing characteristics might be between the old and new?

 

My smart key was only working part of the time.


Then the car battery went dead.
Replaced the car battery and now the smart stopped working.
Replace the fob battery but still no go.
Thought?