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HOW TO: R56 - Thermostat Housing + Thermostat >

HOW TO: R56 - Thermostat Housing + Thermostat

HOW TO: R56 - Thermostat Housing + Thermostat

Old 03-08-2018, 06:09 AM
mcgarrypj is offline
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Thanks to all who have posted here. I have a 2009 JCW Coup with 103k miles on it. I recently noticed a puddle of fluid under the vehicle. I am mechanically inclined, have rebuilt engines, etc. But have become fearful of automotive maintenance due to the complexity of emission controls, electronics, etc. So I drove my MINI to a non-dealer European Auto Specialist for diagnosis and repair.

Thermostat housing replacement:
Parts - $151 - Part number 11538699290
Labor - $438.69 - I have no idea if that is a fixed price or how that cost was determined ???

During the repair, which took over a week, the shop suggested replacing the plastic pipe between the water pump and the thermostat housing. Seemed appropriate given that a connecting plastic part had cracked, so I consented.
Parts - $ 125.56 - Part number 11537589713
Labor - $365.58

Toss in the $9.75 for a quart of BMW anti-freeze, unspecified materials cost of $22.90, sales tax of $69.73, AAA discount of $80.43, and the Grand Total cost of the repair of $1,102.78

Less than 50 miles later - check engine light is ON. So I ordered a BAFX Bluetooth OBD2 scanner and loaded Torque Pro on my Android phone. That was ~$25 well spent!! Two fault codes: P112B & P0117. I emailed the fault codes to the repair shop and asked the question, "Does the replacement thermostat housing assembly include a new coolant temperature sensor?" The response was a phone call requesting that I bring the car back in while not answering my question. I suspect the problem is a failed sensor and or loose connections during reassembly. We'll see.

Needless to say, this is truly a PITA! The shop does not offer a shuttle service, I have two vehicles, but only one driver, I rely on the kindness of friends to provide rides to and from the shop. So the car is back in the shop for diagnosis, no word yet. I post all of this not to complain, rather to underscore the value of this thread. Had I read this before, I would have saved time, frustration, inconvenience, and money by performing the repair mysel! Education is expensive. Again, I thank you to all of those who have shared their experience, expertise, and knowledge. Be bold, you can successfully repair you're own MINI.
Old 04-10-2018, 06:20 AM
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Richieb0y28 is offline
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Did you check the Mini site to see if your JCW qualifies for reimbursement?


I'm in the process of receiving my reimbursement check (fingers crossed).

Your part# for the thermostat is correct, that's the same part # the shop used for mine, however my repair+parts was $490 total and took 1 day with my local shop.

They also flushed my coolant because I mixed the wrong kind in when I noticed it
starting to leak and added oil to my car. All of this came out to $490.
Old 08-08-2018, 02:43 PM
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Great post Boosted Mini--Thanks!

I just replaced the thermostat housing on my manual 2013 Countryman S (46k miles). and This thread was a great resource.
The job turned out to be a PITA, but that was mostly my fault.

I ordered my housing from Pelican and had it shipped next day (about $160 with shipping) since I really need the car this weekend. I also picked up a gallon of coolant for $20, and a big bag of kitty litter for ~$25 (I used about $2 worth).

An hour in to the job as I was pulling the bolts on the old housing, I realized that the sensor connections were different on the new one, and quickly determined that I did, in fact, need a wiring harness adapter. I then had to wait for the dealership to open before I could even call to ask if they had one. They did, so an hour-ish round trip via Lyft (~$70) and $45 for the adapter (I sure wish I could sell something with that kind of margin) I was back on track, although working on the car through a couple conference calls definitely hurt my time on this job.

The only really difficult part for me was getting the clip back on the water pump pipe. Even with the air cleaner removed, I could just barely get a couple fingers into the spot where I needed a couple fingers *and* a thumb. I thank whatever car gods may be for hemostats. Still, it seemed like my car had way more crowded into that little section of engine compartment than did the photos I saw of other cars undergoing the housing replacement. I must have spent more than 45 minutes on that blasted clip before it clicked into place.

In any case, even with the added Lyft expense, I figure this job came in at just under $300. I didn't get a quote from a shop, but there is probably a 0% chance that I would have spent less than that if I had taken the car in for repair.

When I have to do it in another 45K miles, I bet I can do it in just over an hour.
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