Almost all modern vehicles rely upon electric cooling fans to pull air through the vehicle radiator to keep the engine cool.
Bmw e46 radiator fan relay location.
There was someone recently who found a supplier who carried the fan without the relay box so presumably one could find the relay box without the fan.
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This relay location requires that the glovebox be removed for access.
Unfortunately on the e46 the relays are not available separately from the fan so unless you re an electrical wizard you just replace the whole fan assembly to the tune of about 400.
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For cars from 1999 model year without headlight washers 1.
These cooling fans rely upon electric motor and they typically have a moderate to high slow draw which means that they are commonly controlled with a relay that relay controls the fans for the engine.
Various relays in the bmw e46.