Genuine Volvo S40 Oil Pressure Switch

Volvo S40 Oil Pressure Switch Parts and Q&A

• Oil Pressure Sending Unit
  3545696
  Q: How to remove and refit the Oil Pressure Switch from the cylinder block for 2.4 litre petrol engine on Volvo S40?

  A:

  To remove the switch, you first need to unscrew it from the front of the cylinder block. Park the vehicle on firm and level ground, open the bonnet and disconnect the battery negative lead. If required, jack the front up and secure it securely on axle stands for easier access to the switch. Undo the 7 Torx Screws and remove the engine undershield. Disconnect the wiring connector from the switch and unscrew it, being ready for some oil loss. For refitting, do the reverse process of removal and apply a thin smear of suitable sealant on the threads of the switch and tighten it to the specified torque wrench setting. Afterwards, check the engine oil level and top up if necessary, and check for signs of oil leaks after the engine is restarted and warmed up to normal operating temperature.
• Oil Pressure Sending Unit
  272484
  Q: How to replace the oil pressure switch for 1.8 and 2.0 litre petrol engines on Volvo S40?

  A:

  The switch is screwed in place on the oil filter housing on the front of the cylinder block. With the vehicle parked on firm level ground, open the bonnet and remove the battery negative lead. If necessary, jack up the front of the vehicle and place it securely on axle stands so that you can access the switch. Where fitted, undo the 7 Torx screws and also remove the engine undershield. Disconnect the wiring connector from the switch and unscrew it, keeping in mind that you may lose some oil. For refitting, do the opposite of the removal procedure, making a thin smear of appropriate sealant on the threads of the switch and tightening the switch to the recommended torque wrench torque setting. Check engine oil level and top it up as needed, and look for the presence of oil leaks after the engine has been restarted and warmed up to the normal operating temperature.