Hope I’m posting this in the right place. I couldn’t find an exact answer to my situation by searching.
l will try to keep it brief!
My wife has a May 2015 manual Yeti TDi with a gen 5 Haldex. The Haldex oil was changed February 2018 at 37,601 at a main dealer and again at 68,606 miles on 9th August this year at a VW specialist when the pump screen was also cleaned out. It was pretty filthy according to a photo the garage showed me.
The car has done no long, fast journeys since then until last week, when at 69,800 miles we had a bearing type noise when driving from Calais to Paris. The noise was a type of whirring noise varying in intensity depending where you were sat in the car. A vibration was also present at about 75mph which I initially attributed to the balancing on a pair of new Hankook 4 season tyres.
Green Flag sent a breakdown agent who took the car out and diagnosed a failing rear wheel bearing. He told me get it changed back home, that it was safe for at least another 1,000km and that I didn’t need to keep my speed down. I did keep my speed down, but at 65 mph and just over 70,000 miles there was a bang from the rear and the back wheels locked up, released, locked, released until I pulled onto the hard shoulder. Looking under the car oil was coming out of the Haldex or the differential. It ran slowly for about 10 minutes until about a litre or so was on the ground. Rubbing a finger in it showed it was fairly clear and smelt of gear oil.
My questions are twofold. Given that about a litre of oil has come out, could the failure be at all related to the recent Haldex service? Also, if I had stopped driving when the noise was first noticed, could serious damage have been avoided or was the unit already kippered?
Until the car is repatriated in a couple of weeks I don’t know exactly what has failed, but I am already looking for a good second hand Haldex and differential. I presume a gen 5 from any VW group vehicle will fit?
Appreciate any thoughts and wisdom. Thanks.