Completely stumped, last chance before a trip to dealer
#1
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Alright long time lurker, first time poster.
love these forums, helped me alot with my older 01 s-type that was rearended and wrecked.
Ended up getting a 97 xk8 convertible to replace in February of 2021
no problems at all until I let it sit for a week while I was on vacation, came back, put key in and the car thought it was being stolen so the alarms started going off (much to the charging of my neighbors)
Checked all fuses- okChecked battery, battery was a little weak so just replaced itSLM was corroded, replaced with one off of eBay with same numbers (the last three /006)
Don't believe car is supposed to have a transponder key but have the weird notch in key/fuses for KTM and such labeled in boot fuse box
without SLM the car will start and drive so I can take it to dealer without tow, but it's a bit of a drive so trying to elimate any other options
Think it may be the transponder? If so is that something I can fix or is a trip to the dealer in order as I fear? Thanks In advance guys
love these forums, helped me alot with my older 01 s-type that was rearended and wrecked.
Ended up getting a 97 xk8 convertible to replace in February of 2021
no problems at all until I let it sit for a week while I was on vacation, came back, put key in and the car thought it was being stolen so the alarms started going off (much to the charging of my neighbors)
Checked all fuses- okChecked battery, battery was a little weak so just replaced itSLM was corroded, replaced with one off of eBay with same numbers (the last three /006)
Don't believe car is supposed to have a transponder key but have the weird notch in key/fuses for KTM and such labeled in boot fuse box
without SLM the car will start and drive so I can take it to dealer without tow, but it's a bit of a drive so trying to elimate any other options
Think it may be the transponder? If so is that something I can fix or is a trip to the dealer in order as I fear? Thanks In advance guys
#3
#4
#5
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I had it on a charger overnight with both the new battery and old battery and then tried it in the morning. I laughed out loud at your statement though because it is very true. 99.9% of my other problems were solved by just charging the battery
#7
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A hard reset is typically defined as disconnecting both battery terminal cables, leaving them disconnected for a couple of minutes, then touching them together for perhaps 60 seconds before re-installing them on the battery terminals. This helps to discharge some of the capacitors in the electrical system and can sometimes work wonders in fixing various electrical problems....
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#8
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Don't believe car is supposed to have a transponder key but have the weird notch in key/fuses for KTM and such labeled in boot fuse box
without SLM the car will start and drive so I can take it to dealer without tow, but it's a bit of a drive so trying to elimate any other options
without SLM the car will start and drive so I can take it to dealer without tow, but it's a bit of a drive so trying to elimate any other options
Last edited by GGG; 12-19-2021 at 06:59 PM. Reason: Edited at OP's request
#9
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Hi - normal behaviour when unlocking using the key is to hear a 'countdown' series of soft beeps to give time to get the key in the ignition & turn to position ii to cancel the alarm sounding. Is this what is happening, or does the alarm sound immediately?
'97 US models don't have a key transponder/KTM, AFAIK. However, you can start the car so if yours is so equipped, it's working fine. Is it just the key remote fob that isn't working?
I would advise not driving the car without the SLM since you will have no tail or brake lights.
'97 US models don't have a key transponder/KTM, AFAIK. However, you can start the car so if yours is so equipped, it's working fine. Is it just the key remote fob that isn't working?
I would advise not driving the car without the SLM since you will have no tail or brake lights.
AFAIK the 97 models aren't supposed to have it either, and the drivers/owmers manual makes no mention, but the boot fuse box has labels for the fuses.
The car starts only when the SLM is removed, with it in it will turn on the electrics, but won't let me crank- is it possible I just got two bad SLMs in a row? I followed instruction with matching the codes on the boot sticker but it's possible I still messed something up
I really appreciate all the help you guys are offering.
#10
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A hard reset is typically defined as disconnecting both battery terminal cables, leaving them disconnected for a couple of minutes, then touching them together for perhaps 60 seconds before re-installing them on the battery terminals. This helps to discharge some of the capacitors in the electrical system and can sometimes work wonders in fixing various electrical problems....
#11
#12
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Separately, grab yourself a code reader if you don't have one. Even a cheap ELM327 clone paired to an Android/iPhone with Torque Lite is good for starters.
#13
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!Did not think to run the OBD reader, already have one and will run/check it tomorrow when I wake up- feel like an idiot for not checking that sooner
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#15
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Hi,
I don't know if you got any further with this?
You're in a catch-22 since you need to try the fob to cancel the alarm. However, since you've replaced the SLM, the fob won't work until it's paired with the car, which probably won't work during an alarm event. I can't explain why the key-in-ignition doesn't cancel.
The car won't crank with the replacement SLM as the alarm has been triggered, and the trigger state can survive a battery disconnection. From the Vehicle Care Security guide (copy attached):
"
Battery Tampering Alarm and Restart Procedure
This feature prevents the security system from being by-passed by
battery disconnection.
If the battery is disconnected when the security system is either
armed, disarmed or in the full alarm state, the security system will
automatically resume the vehicle state before disconnection
when the battery is reconnected.
"
Did the fob(s) work before this event? Try fitting the original SLM to see if you can regain control with the fob.
Perhaps temporarily disable the horns first to keep the neighbours happy![Smile](https://www.jaguarforums.com/forum/images/smilies/smile.gif)
...and it's always cheap insurance to disconnect the battery before changing any module.
edit: do the remote trunk & gas cap releases work?
I don't know if you got any further with this?
You're in a catch-22 since you need to try the fob to cancel the alarm. However, since you've replaced the SLM, the fob won't work until it's paired with the car, which probably won't work during an alarm event. I can't explain why the key-in-ignition doesn't cancel.
The car won't crank with the replacement SLM as the alarm has been triggered, and the trigger state can survive a battery disconnection. From the Vehicle Care Security guide (copy attached):
"
Battery Tampering Alarm and Restart Procedure
This feature prevents the security system from being by-passed by
battery disconnection.
If the battery is disconnected when the security system is either
armed, disarmed or in the full alarm state, the security system will
automatically resume the vehicle state before disconnection
when the battery is reconnected.
"
Did the fob(s) work before this event? Try fitting the original SLM to see if you can regain control with the fob.
Perhaps temporarily disable the horns first to keep the neighbours happy
![Smile](https://www.jaguarforums.com/forum/images/smilies/smile.gif)
...and it's always cheap insurance to disconnect the battery before changing any module.
edit: do the remote trunk & gas cap releases work?
Last edited by michaelh; 12-17-2021 at 02:35 PM.
#17
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Hi,
I don't know if you got any further with this?
You're in a catch-22 since you need the fob to cancel the alarm. However, since you've replaced the SLM, the fob won't work until it's paired with the car, which probably won't work during an alarm event. I can't explain why the key-in-ignition doesn't cancel.
The car won't crank with the replacement SLM as the alarm has been triggered, and the trigger state can survive a battery disconnection. From the Vehicle Care Security guide (copy attached):
"
Battery Tampering Alarm and Restart Procedure
This feature prevents the security system from being by-passed by
battery disconnection.
If the battery is disconnected when the security system is either
armed, disarmed or in the full alarm state, the security system will
automatically resume the vehicle state before disconnection
when the battery is reconnected.
"
Did the fob(s) work before this event? Try fitting the original SLM to see if you can regain control with the fob.
Perhaps temporarily disable the horns first to keep the neighbours happy![Smile](https://www.jaguarforums.com/forum/images/smilies/smile.gif)
...and it's always cheap insurance to disconnect the battery before changing any module.
I don't know if you got any further with this?
You're in a catch-22 since you need the fob to cancel the alarm. However, since you've replaced the SLM, the fob won't work until it's paired with the car, which probably won't work during an alarm event. I can't explain why the key-in-ignition doesn't cancel.
The car won't crank with the replacement SLM as the alarm has been triggered, and the trigger state can survive a battery disconnection. From the Vehicle Care Security guide (copy attached):
"
Battery Tampering Alarm and Restart Procedure
This feature prevents the security system from being by-passed by
battery disconnection.
If the battery is disconnected when the security system is either
armed, disarmed or in the full alarm state, the security system will
automatically resume the vehicle state before disconnection
when the battery is reconnected.
"
Did the fob(s) work before this event? Try fitting the original SLM to see if you can regain control with the fob.
Perhaps temporarily disable the horns first to keep the neighbours happy
![Smile](https://www.jaguarforums.com/forum/images/smilies/smile.gif)
...and it's always cheap insurance to disconnect the battery before changing any module.
#18
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#19
#20
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I do believe that it is in a full alarm state. Trying to use the fobs to unlock or stop it however did nothing. And it doesn't seem to recognize the keys if they're in the door or an ignition. Is there any other way to exit the full alarm state? As a last ditch effort as the fobs never worked since I got the car I'm going to check the fob antenna to make sure it is working