E-Class (W211) 2003-2009

Remote control inactive after delay time.

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Old Aug 29, 2016 | 06:05 AM
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W211 E320 2003
Remote control inactive after delay time.

Dear all,
Recently i purchased a w211 e320 Benz Avantgard model 2003. I changed the head unit (it was a Japanese unit) with a new modern after sales one. Everything was OK but the sound quality was not good. So, I purchased the fiber optic converter to use the original MOST audio gateway. I installed it successfully and the sound quality was restored to the original quality.
I strange phenomena then started. If the car is locked by the remote for some time (around 15minutes), the remote is not working and I have to open the car using the mechanical key. Of course in this case the anti theft is activated but it will be reset as soon as I put the remote in the ignition. Then the remote will be active again. If i try to close and open using the remote, it is working fine. Only if I lock the car for long period the remote becomes inactive again (like time-out).
Please help to sort out this strange phenomena.
Thanks to all.
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Old Aug 29, 2016 | 07:57 AM
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W211 E320 2003
Thanks for the reply. I mean to say that the remote will be active to open and close the car only for about 10-15 minutes from removing the key out of the ignition. Then, after these 15 minutes, the car is not responding to the open or close buttons of the remote.
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Old Aug 29, 2016 | 09:03 AM
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W211 E320 2003
I purchased the car with only one key (original key). It was working fine till the installation of the FO MOST converter. Maybe this is only coincidence.
Also I changed the remote batteries with brand new batteries but same phenomena is still happening.
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