The ECU in my van has failed. Should I get it repaired or just replace it?

I bought a Mercedes Citan 109 CDI long wheelbase panel van, registered 2018, in Feb 2019. It had approximately 8,000 miles on the clock. It now has approx. 13,000 miles on the clock. Recently the van wouldn’t start and the garage has diagnosed an ECU unit failure. They are trying a company that might be able to repair it as a new one is quoted as being £1500 plus VAT. Should the ECU unit fail on such a low mileage or can they fail at any time? Is it worth trying to get it repaired — will it last or should I just bite the bullet and get a new one fitted? I might be tempted to trade it in after that. Can you recommend a small van that might prove to be more reliable? Many thanks for any help you can give.

Asked on 1 July 2021 by Paul Hands

Answered by Dan Powell
I suspect the ECU problems are linked to the vehicle being left standing for long periods outside. It's possible water was getting into the unit or the battery has gone flat and someone has jump-started the van incorrectly and fried the ECU. It may be possible to get a refurb ECU from an independent Mercedes-Benz specialist or breaker's yard.

If you trade the van in then consider a Vauxhall Combo, Volkswagen Caddy or Ford Transit Connect.
Tags: vans ecu
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Refined and comfortable, big improvement on the Renault Kangoo it's based on, 109 CDI BlueEfficiency returns a claimed 65.7mpg.

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