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Thread: Key Fob probelm
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Old 06-21-2012, 08:02 PM
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Location: Northeast Indiana
Join Date: Aug 2008
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Mein Auto: 1997 740iL / 2006 X5 4.4
Originally Posted by gtsinc View Post
...I assume the microprocessor is working because it is reading the EEPROM otherwise the car would not start. ...
See post #9 above. EWS does not communicate over the same RF nor transmit directly to the receiver for the FZV/DWA (central locking/anti-theft alarm siren system). Since the car is starting with no problem...remove EWS from the equation...that function of the key is working correctly.

If the key is not locking/unlocking the car and arming/disarming the car...the problem is with something between the key's transmission of the 315 MHz signal sent to the receiver in the C pillar for the central locking & anti-theft alarm siren systems...especially if one key is working fine. Then perhaps something may be wrong with the key?
Q {BMW CCA Member #191509}
2006 E53 X5 4.4i (Sterling Gray) 12/05 mfg date <<~>> 97 740iL (Arctic Silver) 3/97 mfg date
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