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Old 03-31-2017, 01:27 PM
tivoliman's Avatar
Happy with Mercedes
Join Date: Dec 2002
Location: New Jersey
Posts: 372
Radio "Beep" when starting car?

1995 E420 with a Becker Radio

When the car starts, there is a beep from the left speaker, by the steering wheel.
1) turn key to on (dash lights up)
2) wait 2 seconds, then there is a beep for 1 second
3) this occurs with radio powered on or off

Looking to investigate if the beep occurs with the radio head removed - but challenged with parts

There are no other symptoms, and the car seems to run fine. The radio works fine after the beep. The beep comes when radio powered on and powered off.

Many thanks

Thanks for the help
Bill Fisher

'86 560SL (186K) - Now a 'classic' : Registered as an Historic Vehicle
'95 E420 (198K)
'99 E320 (80K)
'03 LS430 (Lexus)
- - - - -
'95 E420 (231K) Sold to a happy buyer, new to Mercedes
'90 300E (65K) Sold to an Mercedes Lover
'92 190E (215K) - retired to the salvage yard, sigh
'93 500SEL (214K) - Moved to another family, still runs like a young pup
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Old 03-31-2017, 05:33 PM
Registered User
Join Date: Jan 2012
Posts: 7,515
Probably the built in cell phone causing a problem. Look for a usually black box about 4" x 7" x 1" near the antenna. You can also start at the antenna amp / splitter and follow the coax marked CTEL on the amp. Once you find the box, unplug the power wires

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