Typical Cost: Medium
Mobile Repair? Yes
Typical Lead Time: 24 - 48 hours depending on part availability
A starter motor is a heavy duty electric motor that has enough torque to turn the engine in order for it to start. When early engines were made, starting them was done by cranking a handle attached to the crankshaft. This was obviously very tiring, inconvenient and in some cases quite dangerous too! Therefore a more convenient device was designed, powered by a battery to do the work and the modern starter motor was born!
Whilst simplistic in its design, like any electric motor, it does have a number of internal components. Without going into the minute details of how electric motors work, the basic concept is that when an electrical current is passed through coiled wires of the armature it reacts against the magnetic plates on the housing and spins it around.
There are of course a lot of other parts involved, from the contact brushes that carry the electrical current from the source to the rotating shaft of the armature, to bushes, pinions and a solenoid that fires the gears on the shaft into the vehicles flywheel to engage with the engine.
When a start motor fails, it’s generally either the brushes that have worn out, the winding on the armature that has failed or the solenoid that has seized. However, these days, few operations will strip a starter motor to refurbish it as this is both time consuming and the parts are not always easy to obtain in small numbers. Therefore it is both cheaper and quicker to exchange the faulty unit with a new one.
Changing starter motors is a routine repair for all mechanics and can be done both kerbside as well as in the workshop, providing it is safe to do so.
Whilst there are variations between manufacturers, the basics are pretty similar.
The mechanic will;
Unless otherwise stated, the quote for your brake pads to be replaced will cover;
Starter motor replacement
Battery replacement (vehicles without stop/start system)
Battery replacement (vehicles with stop/start system)
The cost of a starter motor replacement depends on your car and what parts your car's manufacturer recommends.
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No, we will not fit customer supplied parts unless they are a brand new item, purchased from a dealership with the receipt as proof of purchase. There is no flexibility over this due to insurance and warranty issues.
In this scenario, the mechanic will provide a no obligation quote for the correct repair. Should you accept this, the mechanic can alter the booking accordingly. If you decide not to go ahead with the alternative repair, the mechanic can change the booking to a call out and diagnostic booking and charge according to the time spent with the vehicle and call out.