1980 to 1991 W126 Mercedes Sedans: Why Most of the Door Lock Systems Don't Work?

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Added 5 years ago by vindheim

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They have power door locks but all have failed. Where has the power gone?? Link to full on-demand troubleshooting video manual. https://mercedessource.com/store/1981-1991-w126-chassis-sedan-vacuum-door-lock-troubleshooting-and-repair-demand-video-manual