4 recalls across 4 model years
The Mercedes-Benz 450 has 4 recalls spanning the 1972-1977 production run, the most serious being a transmission linkage defect on 1976-1977 models where a plastic bushing in the automatic transmission's control pressure linkage can deform and prevent the throttle from returning to idle, leaving the engine stuck at elevated power and causing loss of vehicle control.
The 1973 model year has a cruise control actuator mounted in the wheel well that can corrode heavily enough to cause the system to behave unpredictably, either failing to disengage or not responding as expected. The earliest production year covered, 1972, has a structural concern where welds on the left front frame members may not have been completed correctly, potentially compromising the integrity of the front frame under load.
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