I own the Bentley manual for these cars, and I own 2 R50s. 2003 & 2006. Can someone please give me insight as 2 what exactly the "service mode" is for? Not specifically which procedures 2 use it on but where is it in the manual? I cannot find it, was wanting to read up on it and get a summary of it. I understand the principle of it but did it become a thing after the Bentley manual? Am I overlooking it? I have 2 replace my oil filter housing gasket and just wondering why it was a necessity 2 put it in service mode for this procedure. I just replaced a power steering pump like a month ago and never used the service mode for this... was I wrong for not? Just would like some insight because it seems everyone here mentions it from what I've read. And honestly I'm just recently learning about it. Have I gambled with odds by not using it previously ? Please help me completly understand this service mode thing. Thanks.

 

Look in Section 510 from pages 5-10. They refer to the Modular Front End as what you are dealing with. I think you get to the oil filter housing gasket by removing the passenger side splash shield in the wheelwell and then using a series of socket extensions and wobblies to access the fasteners, some of which you ay not even be able to see easily. Service Mode would not be necessary for that operation, but there are plenty of others where you would need to do it. Make sure you read the note on 510-10 about the long bolts needed to support the MFE when you do put it into service mode. Good luck!

 

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+1

 

In the ~17 years I’ve had my R50, I think I’ve only needed front end service mode… twice? I know I used it to change the crankshaft position sensor o-ring, and I want to say I needed it for the A/C compressor clutch.

 

If it is an r50. You can pull the oil filter housing from the top of the engine.

First you remove the negative battery cable from battery.
Next remove the shield that is bolted to the filter housing. Slide it to the side.
Now remove the filter a cap.
Unplug the oil pressure sensor.
Now get your socket I believe it’s a 13mm. An remove the 3 bolts.
An that’s it. Not hard at all.

If you have an r53. You will need to unbolt the oil cooler. You can remove the passenger wheel skirt. Gives you direct access to the bolts holding the cooler to the filter housing.

 

Front-end service mode is useful when doing something that's in front of the engine.
Indeed it's not useful for the oil filter housing gasket or power steering system.

Here are a few things you probably want to use front-end service mode for:

• radiator or radiator fan. There is not enough space otherwise.
• any accessory: water pump, AC, alternator (not sure it's required for all of them, but it certainly makes the job easier by giving more clearance)
• gearbox/clutch: again, gives clearance to drop the gearbox. There are different models of gearbox and different ways to do a clutch job, but for example to drop a Midlands (pre-facelift R50) you need to do it.
• front subframe. The front-end is attached to the front subframe via crash tubes. They need to be removed to drop the subframe.
• crankshaft position sensor. While some may have tiny enough hands to do that without the additional clearance, that's certainly not possible for me or anyone with average sized hands.

I'm probably forgetting a few operations, but that's what come to mind. I have done half of those and after a few times, it only takes 15/20 minutes to go from "front wheel off" to "front-end service mode" (= radiator pulled by a few inches but still on the car with the cooling/AC system not opened).

 

Oil cooler on r53 you can get from top and bottom, without going through wheel well. Drop the power steering fan and boom, I had access to the bottom bolt on driver side, got the other two from above.

 

Thnx guys 4 the feedback, each reply was very helpful. I found the info I was looking for and got a better understanding of the service mode and also got a great step by step instructions on my diy job at hand (all because of this thread and the replys) glad 2 know other mini maniacs are here 2 assist and help out when issues arise. Will be using this thread again religiously. I've learned alot just from scanning and reading other articles as well. Thanks 2 u all.

 

Glade we could help. Feel free to ask if you need help.

 

There’s also what Alex and I call partial service mode, where you leave the rad hoses connected and just undo the rad hose holder and swing the rad support open so you can work on most everything in the front of block without having to refill cooling system.


I never had the bolts, so I just set it on some boxes or my rolling stool and it works fine, you can get a foot or so clearance

only tricky part is jsut like full FES, getting the condenser wiggled down and out of the way.

 

The oil filter housing was a piece of cake I was dreading from reading other posts but they must have been on an r53. Several mentioned PITA so my mood was already set but 2 my surprise everything went very easily. Got that out of the way now I am dropping a midlands 5speed from one of my r50s (actually used service mode) ((well kinda I actually removed the whole MFE.)) But anyways on 2 the subject, I was just curious if an r53 bonnet hood would line up perfectly with no extra modding in place of the r50 hood? Is this doable as I have described or is it taller or wider or longer etc? I know I may get ridiculed being as it's an r50 but I don't really care. I honestly was thinkn of doing it because of the airflow (aside from looks) I know it would be beneficial for the air intake and keeping the temp down under hood. But I have doubts about it being identical sizing. Someone with this answer please inform me and in the mean time just 4 the heck of it I'm gunna post a pic or 2 of the r50 I'm currently removing the midlands gearbox from. Thanks in advance. **** just realized I prolly should have made this a new thread but will do if nobody seeing this has the answer cuz I done typed 2 much lol

 

Onizukuchan I tried that b4 but it was a failed attempt, I started 2 get frustrated while trying 2 maneuver it without disconnecting and ended up popping the caps to both high and low and began 2 release the pressure. I honestly felt like I was close 2 damaging the unit also.

 

A few of my dependents. And im not a hoarder but if they are paid off and i have the space and enjoy them then why part with em.

 

current R50 condition
Well almost, it has now had battery removed (was already depleted why it was still connected at time of pic) and has had a new water pump threw on since this pic was taken couple days ago. Nothing really wrong with water pump pictured other than older but it was a learning project I did with my son.