500SL (129.067) V8-5.0L (119.972) (1993)
Brake Fluid Pump Relay: Service and Repair
NOTE:
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Phased in at the beginning of 1986 a modified hydraulic unit has been installed.
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The valve relay (A7K1) has six contact pins (previously 5) and contains the diode previously located in the plug socket of the hydraulic unit.
Removal
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Turn ignition OFF.
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Remove Torx hexagon socket bolt (8), then remove plastic cover.
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Remove solenoid-valve relay (A7K1).
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Remove return/charge pump relay (A7k2).
Installation
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Reverse procedure to install.