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TLDR; Bought 2014 ED with 19k mi from a used car dealer in July 2017. Signed lease for BAP. Original Lessee never serviced car. I had 10k & 20k service done at 21K miles. Battery tested fine. 2 Months later battery has failed. MB says it may not be covered due to 10k service not being done earlier. Submitted claim to MB and they have not approved or denied the warranty claim it's been 12 days.

So I bought my 2014 ED purchased off lease from a local used car lot which seems to have a lot of these cars. I got it for a good price and I knew about the BAP. The dealer said MB would be in touch about the BAP but of course they never notified MB (because used car dealer does not give a sh*t). So I contacted MBFS myself and signed the BAP lease and have paid every month since.

No maintenance light was on but it was at 20k miles so I took it in to MB for 20k service. They told me it had NEVER been serviced before. I asked how that could be since it was a lease return sold at auction with the requirement the new buyer continue the BAP. Why wasn't the BAP terminated with the original Lessee if they never did the required annual battery maintainance? NO ANSWER.

Anyway they did the 10k service and 20k service at the same time under warranty. All the 10k service really required was the desiccant cartridge replaced and a few software updates. They did that and said dessicant was not that dirty.

Fast forward 2 months I'm getting error messages on startup. Engine off. Won't go. Have to wait 30 mins to 1 hour for it to clear. Sometimes won't take a charge.

I bring it in. They say a ground wire was not connected and it's fixed. I've already googled this OBDC code and the people that had the problem all had it in the first year of ownership and it required a HD battery replacement. So skeptical I pick the car up, drive it for 1/2 hour park it and when try to restart it same error. So right back to MB. A day later they say yeah needs a new HV battery. And they are submitting the claim and want to know why was it never serviced at 10k? This is a different service advisor than I had before had to explain it all again. I mean it's not like it's an ICE car and I haven't had the oil changed for 20k miles this is a manufacturers defect not caused by lack of service! He said they'd submit a claim on Monday the 20th but didn't seem hopeful they'd cover it.

Now Tuesday the 28th and no word I called the service advisor and he asks can I contact the prior owner and see if they have service records for the 10k service. I said hey this was a MB off-lease you should have the record of the prior Lessee YOU contact them and again why did BAP let me take over a lease when the prior lessee never had the battery serviced? He has NO ANSWER.

So I call the MB number for BAP and ask hey am I covered on this if I get denied on the regular warranty I am paying you guys almost $90/month for "Assurance" as I am feeling LESS THAN ASSURED. She puts me on hold then comes back and she is really nice and sweet and tells me they really only take my money here and if it gets denied I need to call the warranty people and gives me the number. Yes the same warranty people who are now taking their sweet time to decide my fate.

So we will see what they say. I don't see why they would not cover it since it seems like their mistake all around and they actually own the battery, I just lease it. But if they deny it I am left with a useless sled and out $5k+ and they are out the 6 years of BAP payments I would have paid.

But the only thing that is certain is Battery Assurance Plus has completely failed as I have gotten absolutely no "Assurance" that I will be covered and have been waiting and waiting anxiously not sure if I will have a car or a total loss.

Will update when I hear back. Anyone else have issues with MB's warranty department taking way too long on a claim?
 

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I haven’t had to take my ED in yet since I’ve purchased. (First trip to dealer under my ownership is Thursday to track down wind noise by passenger roof/door and an annoying “clicking” coming from armrest/driver seat every time I move or breathe in too deeply).

But when I took my gas smart in for a separating panoramic roof, it was in there for 3-4 weeks waiting for approval and parts.


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4 Weeks to the day it's been in the shop and finally service advisor calls me back. Claim Denied! Really? Denied due to no 10k service. Clearly this has nothing to do with routine maintenance this is a manufacturer defect. They are using this as an excuse. Service advisor agrees but his hands are tied. I ask him for something in writing telling me it's been denied. He calls me back an hour later and says his shop foreman is still arguing with Mercedes because it's the Battery Control Unit that is bad not the battery itself. Problem is this can't be replaced on it's own it has to be the whole unit battery included. So I will wait and see what the outcome of this is before I call Mercedes-Benz Customer Care and request arbitration. You can't sue them according to the lease agreement. Interestingly MBFS could not find my signed copy of the lease agreement I sent them in July and sent me an unsigned boilerplate copy instead. Oh and the service advisor had no idea what BAP was or that it was a leased battery. And to top it all off apparently even if the claim is approved the battery is on backorder with no estimate on lead time! It all leads me to believe they are dumping all the off-lease units to the auction houses and washing their hands of them. Mercedes-Benz/Smart does not stand behind their product at all beware especially if you are considering buying an off-lease.
 

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This must be really aggravating. Contracts can only be be between legal persons. The BAP agreement is between you and MB, not the previous owner, or the non-person car and MB. You had no contract with MB when it turned 10K miles. It is this weird aspect of BAP which has always made me suspicious of it. (I currently have a '15 lease with the BAP due to be returned in April).

New Smart 451 ED battery packs are probably no longer available at all. And yes, the battery pack is treated as a do-not-open "black box" so that dealers can only change the whole pack even if it it really only a internal relay or PC board that needs replacing.

You might want to look for a independent mechanic with EV qualifications who might have some junkyard connections to a used battery pack, or who is willing to do internal repairs. The battery pack automatically disables itself in crash that deploys air bags, but surely MB designed this to be reset, right?
 

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Does any one know if the battery control unit is covered under the normal 4 year warranty? Is the car less than 4 years old? Even without BAP, it may be covered under the normal car warranty. This may seem like a moot point, but many states (I have no idea where you live) have laws protecting consumers when it comes to car warranties. Those laws might not extend to BAP but they wouldn't need to if your car is still under the original factory 4 year 48k warranty.
It's just a thought.
 

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The original warranty should cover the Control Unit. However, MB is alleging that since the vehicle missed the 10k service that the battery warranty is nullified because of “neglect”.

Now, it would be on MB to prove that:

1) The car wasn’t maintained.

2) The failure involved would have been prevented had the 10k maintenance been performed. Which, considering the car passed the 20k maintenance with flying colours, would be hard to prove.

This sounds like one of those scummy cases of something like a dealer denying warranty on a failed ecu because the driver didn’t do an oil change.
 

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I suspect that the battery management unit is considered as integral with the whole battery pack - i.e. it is assembled by whoever MB outsources the battery pack to and is considered a single "part" from there. But one would think that the normal 4-year warranty would cover the whole battery pack BAP or not, 10K mile check or not.
 

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To clarify my original response. I know MB had debited the claim, however there are some consumer advocacy groups that help people with warranty claims, and this is clearly a case of a warranty claim. Those types of groups probably won't help you if it's only covered under BAP because BAP is not a warranty, it's a lease agreement.
Also I want to mention another very important piece of info that you may not know. The 10k mile service has nothing to do with the drive battery. The only required battery maintenance is the dessicant filter which is called for replacing every 2 years or 20k miles. The 10k service is literally checking to make sure your lights work, topping off fluids, changing the cabin air filter, and of course the most rediculous of all... Changing the key fob batteries.
 

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MY08 cabrio MY09 cabrio Brabus MY15 ED
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. . . it's a lease agreement.

The 10k mile service has nothing to do with the drive battery. The 10k service is literally checking to make sure your lights work, topping off fluids, changing the cabin air filter, and of course the most rediculous of all... Changing the key fob batteries.
Actually BAP is a very poorly written RENTAL agreement for the HV battery. And per your comment, it does not cover the 1yr/10k service (or subsequent milestones) as that is an out of pocket cost item to the lessee . . .

Listed below is from a Daimler/M-B/smartUSA BAP publication dated 4/13.

what is
battery assurance plus
sm?

uncomplicated

battery assurance plussm creates a truly relaxed electric drive experience. instead of a conventional lease, finance or purchase of your entire smart electric drive vehicle, including the battery, battery assurance plus allows you the option to lease, finance or purchase your smart electric drive and rent the battery separately.

besides peace of mind knowing you’re doing your part to care for mother earth, battery assurance plus includes:

>> lower cost of owning or leasing the electric drive vehicle
>> guaranteed battery capacity of 41.6 Ah, up to 10 years
>> annual maintenance of the high-voltage battery, up to 10 years
>> battery repair or battery replacement, if defective, at no cost (should it ever be necessary), up to 10 years

 

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This sounds like one of those scummy cases of something like a dealer denying warranty on a failed ecu because the driver didn’t do an oil change.
Those laws might not extend to BAP but they wouldn't need to if your car is still under the original factory 4 year 48k warranty.
Regarding the 4 year bumper to bumper (begs the question, if under BAP is said warranty SLED ONLY?) factory warranty - per the owner's manual . . .

It is important that you service your vehicle in accordance with the prescribed maintenance schedule. Failure to do so may render your vehicle unsafe, it may affect the durability of the vehicle, and it may otherwise void the limited, express warranty.
 

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Good question!

I’ve had two separate dealerships tell me when I was modding my then leased 451: You’re only voiding the warranty for the parts impacted by your mods.

I guess another question is well, is there any part of the 10k service that could impact the Battery Control Unit? If that answer is no, then it shouldn’t matter if the service was missed or not since it would not have made a difference.

However as you mentioned, BAP presents a problem: Are battery problems a part of the warranty? Or is it a part of BAP? If it’s the latter, then they could theoretically deny an otherwise valid claim because previous owner broke the agreement.
 

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MY08 cabrio MY09 cabrio Brabus MY15 ED
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To me the great question is why isn't smartUSA/MBFS more proactive in the flip of an ED/BAP lease turn-in?

Their sled/battery is being turned in after 36 months while accruing $2,880 in revenue/prepaid HV maintenance. As the HV annual service can only be done at your local smart Center, it is very easy for them to validate the service records.

As the maintenance has been PRE-PAID, why don't they test the battery AND provide the proper maintenance BEFORE sending the unit to auction? Simple, THEY JUST DON'T CARE!

After 36 months the ED (HV battery) should have seen a minimum of 2 milestone services. If those were not done AND the lessor/OWNER (MBFS) will not be bringing the service current how can they offer the new buyer BAP?

Further, isn't BAP secondary to the 4 year bumper to bumper warranty? Aside from the prepaid annual HV service, I don't see BAP as primary until years 5 - 10?
 

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That’s why I love you, MB DNA. You always ask the hard-hitting questions. You are correct. Since the vehicle is leased, MBFS/smartUSA owns the vehicle.

Logically, when getting their property back they should check it all over to make sure it’s ready for resale. All it takes is a simple query to see if the car has had its service yet.

It seems asinine to me that one can be paying for a service that is literally useless because both the original owner (MBFS) and the previous lease holder failed to keep BAP current.

That’s like renting a house and when something breaks, the landlord finds out that the previous tenant failed to do some maintenance stated in their lease. Then for some reason as a result, the landlord wants you to fix it anyway.
 
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Actually BAP is a very poorly written RENTAL agreement for the HV battery. And per your comment, it does not cover the 1yr/10k service (or subsequent milestones) as that is an out of pocket cost item to the lessee . . .
The BAP does include a free the traction battery health check every 10K miles. That is clearly stated in my BAP agreement. The other service items are the responsibility of the leasee - although at my 20K service, they did, perhaps mistakenly, replace the desiccant for free. I've replaced my own cabin air filters and my regular local mechanic did the brake fluid change.
 

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The BAP does include a free the traction battery health check every 10K miles.
Not exactly FREE but prepaid as part of the $960 annual rent.

And the HV battery "health check" can be a great mystery if you don't get the print out - ask for it.
 
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