4 Series Convertible - water collection in sills issue !
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Display red and unstable
Display unit flickers red and you cannot use nav or music -
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Air con manifold pressures
Morning Mike Welcome to the Forum The Post is 3 years old and I am not sure if the original poster even still has the car? As said you can check pressure at the Low Pressure side after 15/20mins running anything below 30 psi points to low /no Gas. Most systems loose a little every year particularly if the system is shut down during the winter months as many folks do, the seals dry out and leaks start it's better to use the Climate Control and leave it running. If your topping it up yourself make sure the kit has the correct compressor oil as low compressor oil levels can give issues. If the water control valves are OK and working, the Climate Control unit is functioning correctly, then I would use someone like Kwik Fit to service the AC the systems they use are automatic and pre-programmed it will vac out the system, providing the system holds the vacuum for a measured time (no leaks) it will introduce the correct oil and re-gas the system. I expect to get mine done every 3 to 5 years depending on the car and AC performance Dave Note your car should be Type R134A you can't mix gasses -
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4x4 abs ebv dsc failure
Morning Steven Welcome to the Forum If you have the original pump and module I would send it to ECU Testing (Derby/Nottingham area) if it is repairable it won't need coding when it goes back on. Brake bleeding is a straight forward procedure I always start at the nearside rear (furthest from the master cylinder) I use a vacuum pump bleeding kit (mine is old but they are about £20 or so) to pull fluid through. Make sure the Master cylinder is above Min at all times, once clear no bubbles or murky fluid lock it off and move to the offside rear and repeat. Then nearside front and finally offside front make sure you are using the correct brake fluid and as said never let the master cylinder drop below the Min mark. Now the only tricky bit is you will need the help of someone who has a BMW capable Diagnostic tool if you don't have your own to activate the ABS unit, job done. If the original can't be repaired the next point to check is "the unit that is fitted is it the correct one for your car" is/was it New or purchased second hand? check the part number of both the Pump and Controller carefully if they are the same as the OEM part then it should have been plug and play. If the unit was (a) Second hand is it faulty? (b) If it is an incorrect part then you will struggle to get it to work. However if it does need coding then again you will need the help of someone who has a Diagnostic program that is capable of doing it Hope this Helps Dave -
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Air con manifold pressures
Did you ever resolve this? I have the same issue and am looking for pressure data. -
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4 Series Convertible - water collection in sills issue !
Hi all, I have owned my 420D convertible for almost two years now and I am really pleased with her combination of performance and economy. However, two months ago I had trouble lowering the rear nearside window - it would not glide down smoothly but only operated in repeated pressing of the window winder button. Even when fully down I found the retractable roof would not fully open. My local BMW specialist garage advised that the problem was that the window winder mechanism on the nearside had failed due to being 'wetted-out' by water ingress to the sill from normal rainfall/washing. Apparently the sill does not have a means of draining away on the 4 Series convertible and eventually it 'floods' the window winder mechanism which sits in this area. My garage stated that this is a common problem on the convertible and they have rectified many of these cars by making a simple drain themselves. I paid £600 for the new winder and labour so was not happy but imagine my horror to experience the offside 'fail' as well ! I have now paid out @£1200 to deal with a 'common knowledge' issue that should have been subject of a simple recall to rectify. I have started an investigation with BMW UK and my local BMW Stratstone dealer to investigate this issue with a view to receiving some recompence for an obvious design fault. My question is, are there any other people/garages 'out there' who have experienced this issue with the 4 Series convertible so that we may form a group to petition BMW for financial retribution ? (I have noted several comments/pictures/videos on Google and Youtube so I know I am not the only one !!). Please feel free to contact me via this post or via my email at [email protected] Thank you !!!
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