Autoelectro reveals common alternator faults

Communication faults, clutch pulley failures and a lack of software updates are among the most common reasons for modern alternators to fail on vehicles, according to rotating electrics remanufacturer Autoelectro.

AEC1777: Ford Fiesta, Mazda 2 1.4 models (2003-onwards)

A three-pin ECU-controlled alternator – often referred to as Ford Smart Charge – this is supplied with a warning notice advising that there could be a 3.5A discharge fault. If the battery fitted to the vehicle is a standard lead type battery and not the recommended sliver calcium, then the alternator will not function correctly.

AEK2971: Honda Civic/CR-V/Accord 2.2-2.4 models (2006-onwards)

The old cores are often returned because of clutch pulley failure. Consequently, this part number is supplied with an advisory notice that a replacement belt should be fitted and the guide pulley removed. This will reduce the pressure and torque on the clutch pulley.

AEG9005: Peugeot Partner/208/3008/5008, Citroën Berlingo/DS3/C3/C4 1.6 diesel models (2010-onwards)

The note packed into this alternator’s packaging advises that the part must be fitted with an AGM battery as it is an iStARS (integrated Starter-Alternator Reversible System) alternator. Whilst these vehicles are fitted with a traditional starter motor for cold starts, this iStARS alternator replaces the conventional alternator and starter motor to provide the combined function of the two components for a better drive.

AEG9023NU: Audi A6, A7, A8, SQ5, SQ7, Q8 3.0 diesel MHEV models (2019-onwards)

Autoelectro is currently offering a genuine OE 48V MHEV Belted Starter Generator (BSG). It is connected to the vehicle via a five-pin plug. The first piece of technical advice Autoelectro offers, before even touching the BSG, is to make sure the vehicle software is up-to-date. If the firmware on the vehicle is not consistent with the BSG’s ECU signal, it can cause communication and charging issues.