XJ XJ8 / XJR ( X308 ) 1997 - 2003

radio locked up after a battery jump start, urgent help please

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Old Jan 19, 2014 | 06:12 PM
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Default radio locked up after a battery jump start, urgent help please

anyone can find me the code besides calling dealer, and how to enter it if there's any tricky. thanks
 
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Old Jan 19, 2014 | 06:20 PM
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US cars do not need a code. Doing an improper jump start can damage a lot more than the radio. Try a hard reset and see if that solves the problem:

Disconnect the negative cable from the battery and touch it to the positive terminal for about 30 sec. This drains the capacitors in the various modules and allows the ECU to address the systems from scratch.
 
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Old Jan 19, 2014 | 06:48 PM
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We have had a few reports (I can recall only 3 instances) of US vehicles actually being fitted with coded radios. In the unlikely event you do have a coded radio, it will display:

CODE _ _ _ _

when powered ON.

Is this what is happening?

Graham
 
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Old Jan 19, 2014 | 07:04 PM
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new York has been very cold plus battery has age on it and i didn't fire up my car near 5 days. so i did a usually jump start but radio now is asking for code. i will try a hard reset, crossing fingers
 
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Old Jan 19, 2014 | 07:22 PM
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GGG,yes. if i provide my vin#, can you find me the code,thanks for million
 
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Old Jan 19, 2014 | 08:20 PM
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ok, i went to my garage and followed what was adviced to touch negative to the positive on the batterybut my radio is still asking for the code. please help. especially Graham
 
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Old Jan 19, 2014 | 09:07 PM
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Most of the time, the radio code is in the owners manual packet somewhere. Check there or you will have to check with a dealer tomorrow.
 
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Old Jan 19, 2014 | 09:18 PM
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unfortunately car didn't come with the owner s manual when i purchased this cat
 
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Old Jan 20, 2014 | 06:07 AM
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Originally Posted by vincent661983
GGG,yes. if i provide my vin#, can you find me the code,thanks for million
You've just become Number 4 in the US with a known coded radio. Certainly not a club you wanted to join!

There should be a card (like a credit card) with the 4 digit Security Code. Here's an example from my 2001 XK8:

radio locked up after a battery jump start, urgent help please-dsc_0158.jpg

This is a regular issue for UK owners where the card has gone missing. A call to the local Jaguar Dealer (with proof of ownership and the VIN) almost always gets the code free of charge.

Graham
 
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Old Jan 20, 2014 | 09:58 AM
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please welcome me to that unfortunately club .Graham

anyway, took a trip to the dealer this morning and got the code.

as soon as i punched, welcome was on display, great feeling
 
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