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I recently had my car in for servicing at an AA garage and asked them to check why the heater only appears to be working on full. Settings 1, 2 and 3 do not appear to be working. The mechanic advised that this would be the resister in the heater and I would need to have an autoelectrician service this. Can you please explain if this is the case and what the resister is. Thanks appreciate your help.
![Anon](/assets/aa/aa-avatar.png?m=1466990309)
Hi there,
The heater resister/ rheostat is a small replaceable unit that controls the fan speed, it has been a common Nissan problem as these cars age. An auto electrician may be able to repair it, but would usually just need replacing with a good used or new one.