Rust Prevention Coating and BSM Sensors?

I had posted this on an old thread
Rust Prevention Coating and TSS Sensors?
but wasn't seeing any responses. Expected that so here goes on new thread.
I have a 2017 TRD Sport that lost the driver's BSM module in January on the coldest day of the month. Went in twice to the Dealer's service department, they said that the Krown spray is the cause and isn't not covered by warranty. After the first visit, I went to the local Krown and they show me where they sprayed and didn't. I've taken pictures, videos, and inspection camera video. There is some oil on the convoluted tubing and the connector housing from when the bottom of the box and the receiver assembly was sprayed. There is nothing on the sensor body itself. I cleaned the inside of the bumper and the sensors (left and right). All there was was road grime - no oils. You can even see the part labels on the top and bottom clearly before cleaning. On the second dealer visit, they said the same thing - the oil has caused the failure and it's not under warranty. They didn't take the connector off the module. They explained that the oil can seep into the connector, break down the seals, and allow water to get into the connector. It looks like a long battle ahead. Anyone have any suggestions?

 

Ask them why only that sensor went out and why the whole truck isn't throwing codes. Why have all the body mounts and suspension parts fallen out of the truck.

 

I asked them on the second visit to do a diags (they hadn't on the first visit). It's the driver's side rear sensor module that is used for BSM and cross-track. They won't tell me anymore than that. They told me to expect trouble with the shocks as well because the rubber had gotten sprayed. My wife 2003 impala had original struts until this summer when I changed them out. She has had Krown treatment since a week after she bought the car and every year after. It's got 387000+ kms on it. Body is in great shape. My son has an old diags computer but it only goes up to 2014 vehicles otherwise I'd be having him pull all the codes and doing resets. I'll probably put an OBD2 on it this weekend.

 

Their logic is flawed. What I'm saying is, If they're right, everything should be failing. Not one random sensor.

 

I’ve got Krown and haven’t had an issue. Each winter my BSM goes out when the roads are super shitty, and last year it actually went out-of-calibration because some ice got behind the little sensors and moved them. The dealer recalibrated under warranty.

Other than ice, you shouldn’t be having any issue unless you bumped something

 

Sorry Skydvrr, After my response, I reread your post. Yep I agree with you. I should be seeing more issues. The time between Krown treatment and the failure was almost two months. Krown says it normally takes about two weeks for their oil to go where it's suppose to. The dealership says it can migrate for almost the whole year. The day it failed it was -15C (5F) as the day time high. Based on the owner's manual extreme cold can affect operation and possible result in a temporary failure code. I'm thinking it caused more than a temporary failure.

I've been waiting for their quote on replacement cost not expecting one. I'm calling Toyota Canada to launch a complaint tomorrow. I received a survey today on the service visit. I kept it polite but they know I'm not pleased. I've worked field service for over 30 yrs in the electronics industry. I've never treated a customer like this dealership has. I've always done a full physical and software diags on the equipment before giving an answer to the customer of whether it's under warranty or not. Many times just for good customer relations I've done the work under warranty when it sits in the grey area.

 

Nope haven't hit anything. Nothing hit me. It failed as I was driving home from work. Got about a half a mile down the road when it went. Never came back.

 

From what I've gathered, they're fickle at best. Good luck!

 

Fickle - the sensors or the dealership.

Thanks!

 

Both. But the sensors especially haha

 

Well your the little guy caught in the middle of two bigger guys.
Let them fight it out.
Have the Toyota Dealership put in writing that the cause of the BSM failure was due to the Krown coating and the repair cost is $XX.XX .
Now take said quote/letter from the dealership to the Krown shop that did your truck.
Ask them if they want to give you the check for the repairs due to their coating or if they want to make the check out to the dealership.

Then open a case with Toyota corporate, tell them about your pictures and about what steps you saw the dealers take to come to their conclusion. Let them know that you and Krown are disputing the dealers conclusion with no investigation done at all.


I assume the Krown guys told you about the Silicone/protective spray they put on all rubber parts right? Since it's hydrocarbon based it does break down some rubbers and foams.
Areas that would be affected first (before the o-rings in your electrical connectors) are the "rubber" isolators like on the tops and bottom of the shocks, body mounts and rad mounts. Lol the foam inside the door-seals just dissolves from oil based products. (that's when you see door-seals all stretched and droopy).

Long story short, worst case scenario Krown gets the bill for your BSM fix. Toyota MAY send a rep to view the BSM unit. Water intrusion into the connector and the o-ring being destroyed is easy to spot. If the connector is easily accessible I'm sure you'll be taking a look soon anyways.

 

I've talked to Toyota Corporate. Got the typical dance about standing behind whatever the service department determined. Still waiting for the quote from the dealership. Been 3+ days. Obviously they aren't concerned with customer satisfaction.

 

I don't know of it's true that Krown eats the rubber. BUT Corrosion Free clearly states that their stuff does NOT eat rubber.

Been using it for 25 years. No drip either.

My local dealer now uses Corrosion Free after they saw my 2006 Taco during frame rot inspection in 2016..... It passed with flying colours.

 

The first tier reps that you talk to on the phone will always have that type of answer, and they are not technically inclined, but so long as you have a case #opened that's all you can expect at this point.
If after a week they have not got their written "diagnosis" done, call corporate back and ask them to follow up on why you can't get it in writing and a quote from the dealer. Review that the dealer did NO real diagnostics (including not even pulling open the connector that they said had water intrusion).
Then politely ask if they want to stand behind a dealer that did no diagnostics, came to a conclusion, and won't put it in writing.

 

My wife's 03 impala has been sprayed every year. I changed the original shocks the past summer. The boots were still in great shape. Didnt see any breakdown. 384000kms on them. Toyota is just trying to reduce replacement on bsm. There are now 3 service bulletins on the bsms for 2015 and newer Tundra Camry Avalon etc. The tacoma uses the same system.

 

I'd be shocked if there was any degradation from the Krown treatment.
If anything probably helps to seal and prevent corrosion on the connectors.
The connector's o-ring is oil rated anyways. No way they are using EDPM there.
But he has to "play the game" with this dealership/Toyota.
Krown can be a reputable rebuttal to the dealership's eagerness for a non-warranty repair.
And may have a system already in place to deal with BS like this, and would probably help him out if it went to arbitration.

Once he has that, he has something to send to corporate that may force them to review/reverse the decision.

 

I'm going to visit Krown and Monday and talk to the franchise owner again. I know the oil they use has a dialetic value of 400000 which makes it none conductive. Once I have talked to Krown, I'll set up a meeting with the dealership's service manager as per corporate's recommendation. If necessary I'll pay for a separate eval using Goodyear or another national garage and see what they say. I'm also going to contact a buddy of my son who has diags computer that should have the 2017 diags in it. May cost me a case of beer but at least I'm know what codes the truck is throwing independent of any garage.

 

Reviews for dealerships in the Belleville area. Know that they're not the best thing to go by but it is interesting
Google Facebook
Chev 4.0 4.1
Dodge 4.2 4.5
Ford 4.6 4.5
Honda 4.7 4,7
Hyundia 4.2 4.1
Kia 3.9 4.1
Mazda 4.6 4.6
Mitsubishi 4.2
Nissan 4.1 4.4
Subaru 4.5
Toyota 3.7 4.3
VW 4.5 4.6

 

All my worst dealership experiences were with Toyota service departments.

None of the ones I've dealt with have ever done all the points of the service checklists, called them out on it, they tried to fib to me, so I had them put it up on the hoist and showed them that the U-joint was not greased, Diffs and trans levels had not been checked, tread depth not checked (I put a paint pen mark on the plugs for the fluid check), personalization was not performed etc etc etc.
I love when they try and BS me, I listen, then mention I worked many years as an automotive Engineer, then proceed to shoot down the BS in very technical terms and explanation. Then ask why as a Service Manager/Service Tech does not know that. Lol I love seeing them squirm.
No clue on service bulletins, recalls, bad basic diagnostics. Only place I've ever seen a 10' walk by diagnostic done, was at a Toyota dealership, I tore the Service Manager, GM and VP new asses at one dealership. Explained how greasy back alley mechanics provide better service and competence than they have exhibited.

Even when I picked my brand new truck up, it had already been damaged by a dealer and they didn't even wash it, and they gave it to me with 3 days of snow and ice on it, no PDI done etc etc...

Toyota Quality Ends at the delivery truck.

 

That's cool that you can go above their heads after they've did their BS. I work for an auto parts manufacturer. Not an engineer, IT. But the previous owner of this Toyota dealership used to be a customer of mine. I haven't laid into them but surprise surprise after a not so glowing review on their survey and the call to Head office. I received an invite to bring back the truck to have them pull the bsm out and have a closer look at it. Something they should have done in the first place. They aren't going to like it but I won't be sitting in the waiting room this time. I don't trust that they won't put oil of some type on the part just to prove a point. I'm also going to video the process. They should have play nice the first time not on the third time.