Is there a reason for the repeated failure of my 2006 Micra's ECU?

The power steering on my 30,000 mile 2006 Nissan Micra failed last November. I sent the unit to ECU Testing Ltd in Derbyshire to be repaired as they offered a lifetime warranty. The unit then failed again and was repaired by ECU Testing again on 14 May. Eight days later it failed yet again. Whilst the repair may have a lifetime warranty it is costing me £150 in labour to remove and replace the unit plus £23 postage and hire of a car every time it fails. Have you had any feedback on the competence of ECU Testing and is there anything I can do to ensure the unit does not fail again?

Asked on 13 July 2013 by AR, Stonehouse

Answered by Honest John
This is becoming a common failure of the Micra K12 and ECU Testing is generally very good up to the limits of what any electronics organisation can do to repair rather than replace a component. Yes, you need to talk to them. Make your very reasonable point and ask how this can be settled. It could be that ECU Testing has been trying to develop a permanent fix. It might be that they end up having to buy you a new EPAS unit
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