I replaced a relay a couple of months back when even if the car was off it would run till the battery is flat. So now the fan doesn't run till I put aircon on.

  • The car is a Nissan qashqai 2007 2 lit petrol – Pedzisai Pakai Jul 5 '18 at 8:01
  • Did you replace it with the same exact part number of relay? – GdD Jul 5 '18 at 8:04
  • Yes it was the same part number – Pedzisai Pakai Jul 5 '18 at 8:17
  • Welcome to Motor Vehicle Maintenance & Repair! – Pᴀᴜʟsᴛᴇʀ2 Jul 5 '18 at 12:05

Either you have the wrong relay or the car engine temperature sensor / circuit has failed.

Does the temperature gauge work correctly?

The fans should have a switch or a sensor that sends a signal to the fan control unit, so you need to test if that switch is working.

  • The temperature gauge works perfectly . Tell me more about the engine temperature sensor. – Pedzisai Pakai Jul 5 '18 at 8:42

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