I'm hoping someone here can offer some advice on this subject.
My father just bought a used 2001 E320 and when he got it the radio
code had not been punched in. After some effort he was able to get the
radio code but has been told that once he enters the code the radio
MUST STAY ON for 8 hours in order for the code to be accepted.
This seems like utter nonsense to me. Although he insists that's what
the dealer told him my experience with dealer service advisors is that
they are not very knowledgeable and, since my dad is getting on a bit
in years, his comprehension of technical things is pretty limited.
Last time I checked the radio was showing "WAIT" when you turned it on
and he thinks that will reset to asking for the code again after a few
My question is, what is the real procedure? Will the radio not start
working immediately once the correct code has been input? Is it really
necessary to keep the radio on for 8 uninterrupted hours in order for
the code to be accepted?
In my car the radio works right after you give it the code. Even still
the radio (as is the case in my dad's car) is not worth stealing and
the whole code business is pointless. Who would steal this radio
except if they wanted to stand on it to reach something on a high
Thanks in advance for any advice you can offer.