Question about 2003 Mercedes-Benz M-Class

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ML320 2003-FM radio not working except by turning the volume to maximum and it can only be heard faintly. The AM, cassette, Cd and phone work fine at normal volume. Any ideas??

I own a 2003 ML320. The FM radio is not working except by turning the volume to maximum and it can only be heard faintly. The AM, cassette, CD and phone work fine at normal volume. Please describe yoThe FM radio is not working except by turning the volume to maximum and it can only be heard faintly. The AM, cassette, CD and phone work fine at normal volume.

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  • Anonymous Mar 26, 2014

    The FM band of my radio has lost 95% of its volume. AM and CD volumes work fine. Any thoughts on how to fix this?

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For sure button for FM is out of order

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Where is the spitter on a ml320 m/b

Posted on Dec 19, 2012

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Lost sound on 2005 impala. radio works. seems like amp problem.


Do you have base or up;level system ?

Table 1: Radio Features
Table 2: Cassette Features
Table 3: Compact Disc Features
Table 4: XM Advisory Messages
The radio receives power from the RADIO fuse in the junction block-right I/P. Ground is provided via G201 and G202. The radio is enabled/disabled by class 2 messages from the body control module (BCM). The radio routes audio signals from the digital radio receiver or the vehicle communication interface module (VCIM) to the speakers and/or amplifier when directed by class 2 messages.
The Entertainment System on this vehicle is configured with an AM/FM stereo radio with the radio data system (RDS) and either a cassette player or a CD player or both. CD and cassette. The uplevel system provides the customer with extended range speakers and an audio amplifier. Satellite digital radio (U2K) is available with uplevel systems.
The following list shows the radios available for this vehicle:
• Radio (ULO) - AM/FM Stereo, Cassette with RDS
• Radio (UNO) - AM/FM Stereo, CD and RDS
• Radio (UPO) - AM/FM Stereo, Cassette with CD and RDS .The complexity of the radio systems on these vehicle is mind blowing .

Your best bet take it to a GM dealer , has features you are unawear of .
DTC B1025, B1035, B1045, or B1055
When the radio is powered up, the radio supplies low level audio signals to the speakers. If the vehicle is equipped with an audio amplifier, the amplifier will boost the signal sent to the speakers.
DTC B1025 Audio Output Circuit
Install a scan tool.
Turn ON the ignition, with the engine OFF.
With the scan tool, monitor the DTC Information for DTC B1025.
Does the scan tool indicate that DTC B1025 is current?

Jan 31, 2017 | Cars & Trucks

1 Answer

MY 2001 ML 430 FM RADIO IS WORKING BUT VERY FAINT AM CD NAVI IS ALL FINE BUT WHEN I TURN TO FM ITS JUST NOT LOUD I TURN IT UP ALL THE WAY AND STILL VERY FAINT SOUND


Radios naturally come with am, so it will always work so long as there's power to the radio. Fm, however, is a built in receiver and if they break or start to break, then you will lose power to your fm which it sounds like is starting to happen to you.

Mar 14, 2016 | Mercedes-Benz M-Class Cars & Trucks

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My am radio doesn't work but fm is working and cd and cassette works fine


internal fault in radio ,nobody uses medium wave anymore though so does it matter

Jan 03, 2011 | 1998 Oldsmobile Cutlass

4 Answers

ML320 2003-FM radio not working except by turning the volume to maximum and it can only be heard faintly. The AM, cassette, Cd and phone work fine at normal volume. Any ideas??


i was wondering if you were able to find a solution for this. I am currently having this same problem with my vehicle (as a few others as well). if you could please let me know, id greatly appreciate it. my email is josephelara@yahoo.com.

May 15, 2009 | 2003 Mercedes-Benz M-Class

1 Answer

Radio: Volume for fm doesn't work


Get some contact cleaner spray turn power off . And spray the knobs and the push buttons. Then keep pushing an turning the buttons an knobs .Let sit 30 min an blow them out with can air.Turn on see what happens. Some times you my have to do it 2 times. Are Spary and let sit overnight. Ford an Mercury's are bad to get moister in them. It worked for me a lot.

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Honda Radio button lights do not illuminate


were the lights working before?
sounds like a defective radio.

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1999 Jaguar XK8 radio problem


You should reboot the system, sometimes these cars hicup so to speak.
Disconnect the battery, both sides, then with it still disconnected turn the key to crank 3-4 times (with the battery disconnected, this just discharges all the ecu's and clears any held memorys)
Reconnect the battery (pos + first)
After that you need to relearn the windows, with the key on or the car running send the windows all the way up, then one at a time, hold the button to bring 1 down and continue to hold for 5 seconds once it is all the way down, do the same for the up position, repeat on the other side and you should be good to go.
JPTCAT

Aug 23, 2008 | 1997 Jaguar XK8

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