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Old 12-05-2019, 06:47 PM   #1
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Key fob not working

My car sat 5 years in garage. I had to replace the battery. Car starts and drives but my key fob has a new battery but does not open doors, or trunks. How do I reinitialize key fob.

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Old 12-05-2019, 07:13 PM   #2
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Old 12-06-2019, 06:21 PM   #3
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I repeated this procedure 3 times and when I press the remote button, the red light on remote comes on but nothing happens in the car.
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Old 12-06-2019, 06:56 PM   #4
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Time for a trip to the dealer, most likely.
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Old 12-06-2019, 10:15 PM   #5
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Try "flipping" the battery as that might do the trick since you mentioned to LED comes on. This resets the processor in the key.
TSB 17/03 9662

2. Restarting the processor.
2.1 Remove battery as described under Step 1.2. (Normal removal of battery)
2.2 Inserting battery briefly with polarity reversed.
2.2.1 After a waiting time of at least 10 seconds, slide battery with the polarity of the battery reversed (positive terminal downwards) under the tab (Figure 1, arrow 2).
2.2.2 Clip battery downward into the holder.
2.2.3 After a waiting time of approx. 3 seconds, remove this incorrectly polarized battery again.
2.3 Install battery as described under Step 1.3. (Normal battery installation)
2.4 Check the function of the remote control.

Cliff Notes version: Pull the battery and wait 10 seconds. Install it reversed for 3 seconds, remove it. Reinstall battery correctly and try it.

Last edited by Jasper_Boxst; 12-06-2019 at 10:19 PM.
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Old 12-07-2019, 05:28 AM   #6
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Thanks for this TSB! With it's help I was able to get both key remotes to show the LED.
Anyhow, as trying to do the 'Load Switch off' procedure below, the key remotes do not connec to the car...
Could there be anything else I could try to do to fix the key remotes, besides visit at the dealer?
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Old 12-07-2019, 08:43 AM   #7
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Check your solder joints: Key Transmitter Repair (new switch didn't fix it?)

Quote:
Originally Posted by pilot4fn View Post
Thanks for this TSB! With it's help I was able to get both key remotes to show the LED.
Anyhow, as trying to do the 'Load Switch off' procedure below, the key remotes do not connec to the car...
Could there be anything else I could try to do to fix the key remotes, besides visit at the dealer?
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Old 12-07-2019, 11:14 AM   #8
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P-wave is the fob-whisperer
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Old 12-07-2019, 12:22 PM   #9
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Originally Posted by particlewave View Post
Fantastic, Thank you!
Let's see if I can sort out the fob's soldering my self or... would The fob-whisperer be able to help regardless that I'm across the world

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