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Big Will

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  1. Big Will

    noise from cruise control actuator

    I wanted to update this post as I've finally solved this annoying mystery. It turned out that the crazy noise heard in the attached videos above wasn't actually the clevis vibrating inside the cruise control actuator. Despite the fact that tapping on the actuator produces a similar (albeit quieter) version of the sound heard in the cabin, after trying two used actuators and replacing the cruise control cable itself, the noise was still there. For a while, I thought that adjusting the angle that the actuator sat at made a difference but it turned out just to be coincidence and probably had to do with the way the wind was hitting the car at a given moment. On a very late night drive last weekend coming off of a ferry, the noise was driving me nuts so I pulled over and with a flashlight tried to trace how a noise from the actuator would translate into the cabin and it didn't make sense. By accident, my hand tapped the plastic cowl that covers the wiper actuator and eureka! The two-piece cowl had quite a bit of play in it toward the center on both the driver and passenger piece. This was what was making the noise! When wind would hit the cowl it would cause the plastic to tap against the metal of the body at the edge of the engine bay below the windshield. I taped the pieces in place and the noise was gone. The fix was to replace the old plastic rivets as some of them had broken over the years. There are 8 of them in total and the part number is 51711928946 When you replace them it's a good idea to take the opportunity to remove the cowl pieces and clean under there and this also gives you the chance to ensure that the two pieces are placed back together correctly to minimize any chance for vibration to occur. To do this, you pop out the old rivets, remove the two 13mm nuts holding the wiper arms in place (be careful not to lose the washers underneath) and then lift arms off. If you have the wiper arms that are automatically pressure adjusting I believe there are a pair of allen head screws instead of 13mm nuts. Once the wiper arms are out of the way, the cowl pieces will then lift up and out.
  2. Big Will

    EWS and alarm question

    Thanks Geoff. That's helpful. Much appreciated.
  3. Big Will

    EWS and alarm question

    Hi all, Hope everyone's having a nice weekend. I have a question about the alarm and immobilizer. My iX is an 09/94 build so it should have EWS I as I understand it. When I bought the car, I got all four keys (2 fobs with the two buttons, and the two emergency keys). One of the fobs is broken (new battery made no difference). If I use this "dead" remote using the actual key portion of it or the emergency keys to unlock the car, the alarm goes off and the car won't start. I have to use the one working remote to properly unlock the car. Something tells me that this isn't the intended way for the system to work because if that remote's battery went kaput or one had a situation where he/she didn't have it, then I would think BMW would still want the owner to be able to get into and drive the car. Does anyone know what the proper function should be and if indeed this is not the way it should function am I looking at a defective TRANSMITTER RECEIVER MODULE (pn: 61358379502)? Or is this part only an EWS II thing? I have an extra lying around that I can swap in if indeed it's part of the EWS I system.
  4. Big Will

    Wiper blades

    Yep, that's the correct kit but personally I use a 22" blade on the passenger side rather than the 24" which is why I buy them separately.
  5. Big Will

    Wiper blades

    I'm located in Germany so almost every auto store and petrol station carries Bosch and SWF wiper blades. I don't think I bought these online but Autodoc.co.uk carries them pretty inexpensively. You just have to search for the right size.
  6. Big Will

    Wiper blades

    The wiper blades for these cars are a challenge! Of course you can get the super expensive ones from BMW and then just replace the rubber blade but if you want a more cost-effective option, Bosch makes the only ones that I've found work. In theory SWF (Valeo) has a kit for the e34 but I found that the passenger side blade was too long and the driver's side blade didn't put pressure down as evenly as the Bosch ones. I use the Bosch 600S on the driver's side and 550S on the passenger side (24 and 22" respectively).
  7. Big Will

    Under seat battery size

    That's a big battery. The 175 width is the key though to getting it clamped down. I didn't think a 354 would fit but great if you can! That said, I have used this car in the Alps in pretty cold weather and haven't had a problem getting it started with this battery which I think is 680cca.
  8. Big Will

    Under seat battery size

    Hi there. Does your iX actually have a battery tray? Mine is mounted directly on the floor and a bracket and bolt hold it down. The key dimension is width for still being able to utilize the factory clamp. Width should be 175mm. I chose a 278 x 175 x175 mm Varta E43. Maximum dimensions that will fit I believe are: 315 x 175 x 190 mm
  9. Big Will

    E34 Gearbox & Diff Oils

    That was a good read. Thanks for linking to it. I had used Redline products on my AWD Volvo wagon in the past. The MTL definitely made an improvement in the shifting for that gearbox but several of my seals began leaking. The MTL was a touch thinner than the stock fluid. I probably should have used the MT-90.
  10. Big Will

    E34 Gearbox & Diff Oils

    I read the links you provided before. I was just noting that most people go with the recommendation to use ATF as far as I know. I haven't read up on the exact specs of how MTF-LT2 compares with Dex II or Dex III ATF but it's certainly plausible that BMW made a decision based on cold shifts etc. That said, I don't think they'd recommend a fluid that risked damaging the gearbox as they wouldn't have wanted to be replacing lots of gearboxes under warranty at the time. Total aside here but I've actually used the LT2 BMW fluid in my Volvo's gearbox simply because it was what I had at hand - identical specs to the Volvo equivalent fluid.
  11. Big Will

    E34 Gearbox & Diff Oils

    I haven't heard of this particular gearbox from ZF using MTF-LT2. RealOEM isn't always correct. Your owners manual should be If it helps, both Liqui Moly and Castrol recommend ATF for this application when you use their selector tools.
  12. Big Will

    E34 Gearbox & Diff Oils

    Your gearbox should have a tag on it saying ATF. I believe the BMW fill was ATF Dex II but most use Dex III now. S5D310Z is the same gearbox used on a lot of e34 and e36 cars. Your owners manual should note the type of fluid. It says ATF in mine. The 75W140 can be used in both the open and limited slip diffs. The LSDs should have a gear oil with a hypoid additive. It doesn't hurt to use this on open diffs it just isn't necessary. Also, there are 75w140 fluids with a limited slip additive and others without...same for 75w90.
  13. Big Will

    E34 Gearbox & Diff Oils

    That should all be correct. You can also use 75w140 if you want for the rear diff.
  14. Hello all, As I continue my quest to get this 525iX touring completely sorted, I'm currently working on solving a strange noise that I first noticed when I drove the car from the dealer back home. At the time, my priority was solving the no-start condition that the car developed on the trip back across Germany (a dead DME). At Autobahn speed (130+ kph) a very strange almost grinding noise would occur from what seemed like directly behind the instrument cluster. It was so constant and didn't really change in pitch but always started around the same speed and was so loud that it would completely drown out the radio! I've attached a video so you can get a sense. While the car was at BMW initially for the starting problem, I mentioned this and they said it was the noisy water valve. This made no sense and of course wasn't the problem. I removed the instrument cluster assuming it would be some broken clips or wires from the harness rubbing on something but driving the car without the cluster made no difference (at least I took the opportunity to change all 23 bulbs) and the cluster itself was in good shape. BMW then gave a shot at test driving it and decided that it was the cruise control cable in the engine bay whacking up against the strut tower because a cable mount was missing. We installed the missing cable mount (12511268352). This did not fix the problem. I continued to trouble shoot until almost by accident I tapped on the cruise control actuator. It was the exact same sound but much quieter (see video attached). I noticed that the 3 nuts mounting the actuator to the bracket were also loose probably from vibration. I replaced the two rubber grommets (37211119643) that dampen the attachment of the bracket to the SLS reservoir in the hope that new rubber would dampen the vibration and then replaced the 3 nuts that attach the actuator to the bracket studs and added some loctite. After a lot of driving, re-positioning the bracket, and re-tightening, the problem is solved. There is literally one orientation of the bracket that seems to keep the vibration to a minimum. However, I know that anytime I have to remove the actuator for any other repair, it will be a lot of effort to get it back into the one position that doesn't vibrate and cause the horrendous noise. I also opened up the actuator and noticed that indeed the noise is coming from inside the actuator itself. You can hear it by tapping on the case. Has anyone ever had anything like this before? Is there a solution other than buying a new actuator or hoping a used one won't have the issue? Also, I ordered a new mounting bracket but the one that arrived doesn't work for the iX because there's a little fuse box that needs to be attached to the bracket and the BMW part no longer seems to have the shoulder to mount it. Does anyone know what the correct part number is for the iX bracket? The number I used was 65711384767. You can see the iX bracket below with the shoulder for the plastic clip to attach the little fuse box. Thanks for any guidance as always! 525iX_noise_edited.m4v 525iX_noise_cruisecontrol_actuator.mp4
  15. Big Will

    Windscreen Wipers

    I don't have the link to the tech note but there is a particular angle (I think it's 84 degrees for the driver's side and 87 for the passenger side) that the wiper arms are supposed to have. There's a procedure that describes using a protractor to measure and then set the angle (carefully with a pair of vice-grips). It may be that the arm's angle is slightly off causing uneven pressure against the glass. Just a thought.
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