volkswagen Workshop Repair Guides

Volkswagen Workshop Service and Repair Manuals

Oil Pressure and Oil Pressure Switch, Checking|Page 16717 > < Oil Pressure and Oil Pressure Switch, Checking
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If LED lights up, replace 1.4 bar Oil Pressure Switch F1. 

If LED does not light up:
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Start engine and increase engine speed.

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LED must light up at 1.2 to 1.6 bar positive pressure, otherwise replace oil pressure switch.

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Increase engine speed further.

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At 2000 RPM and an oil temperature of 80°C, oil pressure must be between 2.7 and 4.5 bar.

At higher engine speeds oil pressure must not exceed 7.0 bar

If specification is not obtained:
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Check screen in intake line for soiling. 

Note: 
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Also, mechanical damage e.g. bearing damage can also be the cause of too low oil pressure.

If no malfunction can be found:
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Replace oil pump. 

If specification is exceeded:
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Check oil channels.

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If necessary, replace oil filter bracket with pressure relief valve.

Oil Pressure and Oil Pressure Switch, Checking|Page 16717 > < Oil Pressure and Oil Pressure Switch, Checking