Blower Motor Relay

What is a Blower Motor Relay?

The Blower Motor Relay is part of the car electrics system. We have 4 associated problem symptoms connected to it.

What problems can be caused by this part?

Coolant blower motor not blowing air / making a sound

The cold air blower is not producing any air at all, it doesn't sound it's doing anything.

Check Engine warning light showing on dashboard

The dashboard warning light showing on this page (or one very similar, sometimes a slightly different shape or colour) has appeared on the dashboard and doesn't go off when the car is running.

Engine temperature is higher than normal

The engine temperature reading on the dashboard gauge is noticeably higher than usual. It doesn't seem to be caused by sitting in traffic on a hot day, it is generally just higher all the time.

Heater not working

The heater does not come on at all, the controls make no difference, there is no sound or hot air coming from the heater.

We have 89 owner problems that mention the Blower Motor Relay