Wombles
LIFE MEMBER
If anyone has a newish coachbuilt motorhome on a Ford Transit chassis it might be an idea to check with Ford if an "upgrade of the engine management software" is needed for your vehicle as if not done you could end up with cracked pistons! We have had a letter from Chausson saying that the upgrade "optimizes engine operation & improves driving comfort" but when checking online the upgrade code 3S548 there are reports saying "the dealer showed me their notification. At low engine temperature, below 20°c excess cylinder pressure can cause piston cracks or failure." :thumbdown: We were going to have this done at its first service but booked in now after reading that! On the positive side once done it sounds as if it will make it run smoother, quieter, less likely to stall & possibly an increase in mpg. Our letter says it takes less than 30 minutes but local Ford garage allows a couple of hours. If you do receive a letter & don't have it done in reasonable time apparently it can invalidate your Ford warranty.Not impressed that this problem was known about in December & the software update was available then but took until now for us to be contacted...