There is a hirschmann model # 2040 that is a universal replacement avail at car stereo shops that shouldn't be more than $80.00 US that will fit. Also harada mkes some that will work the only issue is the rubber grommet that the original one mounts with will not work with the hirschmann 2040 it comes with replacement hardware that works. If you do a replacement antenna the blue wire is 12 volt trigger wire from the radio and there will be a red wire that is constant 12 volt power. the other option is to contact becker as the do an exchange program on that antenna.

Good luck!
Scott@lajollaaudio

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The Mercedes Specialists Since 1986