Skip to main content

Why do rotating products fail in winter?


09 Sep 2019

Category: Guides

Winter is the season for rotating electric failure due to the low temperatures resulting in cooler air and damp conditions which cause overnight condensation.

This affects the car’s cranking system, making the starter motor work harder and creating a deeper drain on the battery. Increased use of lights, windscreen washer pumps and wipers, heated screens and heaters/blowers puts additional strain on the battery’s reserves, reducing the amount of excess power that is available. Additionally, the wet and salty road surfaces accelerate the corrosion of weak points in the charging system, for example where there are corroded, loose or broken connections.

The car’s electrical system is designed to deal with these demands. However, any weaknesses within the starting system such as a bad battery, bad electrical connections, or reduced alternator output will become very apparent in these conditions and cause starting/charging problems. Starters and alternators with weaknesses that survived the mild driving conditions of the summer months are often caught out and the demand on garages becomes intense.

Misdiagnosis with rotating electrics

Rotating parts are one of the most regularly misdiagnosed components with up to 25% of warranty returns not actually showing any faults when investigated. This problem can be attributed to the misreading of symptoms due to the time pressure garages are under. Consequently, garages and motor factors are dealing with many unnecessary returns.

Motor factors can help their garage customers towards diagnosis with some simple advice. All that is needed is a simple multi-meter and a little understanding to complete a simple diagnosis of the problems. Five minutes of proper diagnosis can prove conclusively where the problem lies, saving everyone time and money in the long run and keeping the end-customer happy.

Previous post

Next post

View all posts

Brake Judder: Preventative Steps

Pre-Inspection Test drive the vehicle before removing any parts to confirm symptoms Examine the tyres...

Read More

Disc with Integral Bearing Fitting Instructions

1. If the axle is clean, slide the disc onto the axle, taking care to...

Read More

Preventing Noise, Vibration and Harshness (NVH)

A high priority for those deciding to purchase a car is the cabin experience. Comfort,...

Read More

Strictly Necessary

These cookies are required for our website to operate and include items such as whether or not to display this pop-up box or your session when logging in to the website. These cookies cannot be disabled.

Performance

We use 3rd party services such as Google Analytics to measure the performance of our website. This helps us tailor the site content to our visitors needs.

Functional

From time to time, we may use cookies to store key pieces of information to make our site easier for you to use. Examples of this are remembering selected form options to speed up future uses of them. These cookies are not necessary for the site to work, but may enhance the browsing experience.

Targeting

We may use advertising services that include tracking beacons to allow us to target our visitors with specific adverts on other platforms such as search or social media. These cookies are not required but may improve the services we offer and promote.

Change Settings

Welcome. You can control how we use cookies and 3rd party services below

Change Settings Accept
Learn how we use cookies