Under Hood DPF Regen System Always Running

[Beewi]

Oh, I forgot that you were going in tomorrow. Seems odd to scan it now of all times, doesn't it ?

Absolutely right! Stop fiddling with it and let the dealership sort it out! But let us know what it was.

 

[Mass. Wine Guy]

I just got the module the other day. I will definitely keep this thread up to date.

 

[Mass. Wine Guy]

Sitting at the dealer waiting. If the fault is related to the emissions system (wiring, connections, ?), causing the fan to run overtime and damage the battery (requiring a new one), all would be covered under the extended emissions warranty? HVAC totally out now, too.

Too early to know, but if they dispute this and make me pay, can I appeal to VWoA?

 

[pedroYUL]

The whole engine is covered by dieselgate (not just the emissions stuff), but HVAC is not part of the engine.

 

[Mass. Wine Guy]

The whole engine is covered by dieselgate (not just the emissions stuff), but HVAC is not part of the engine.

That much I know. But it may have been caused by the emissions system problem. Thus covered? I’m guessing it’s most likely a fuse.

 

[pedroYUL]

Very hard to speculate, but it seems to me like a bad ground, or a stuck relay, or a temp sensor stuck reading super high. IMO this is unlikely to be covered, but they should be able to figure it out relatively quick, then it becomes the part cost + 1h labor or whereabouts.

Battery is not necessarily dead, but maybe. Depending on how many times and for how long you let it hit zero volts.

 

[Mass. Wine Guy]

Bingo! Bad fan control module. Plus a new battery. Could be worse.

 

[740GLE]

Where did you end up going?

Warranty pick up the tab?

 

[740GLE]

I'm only slightly embarrassed to say that the Malibu is my favorite rental car, and I wish they kept making the 2.0T as it was proper quick (0-60 in the mid fives).

I also really appreciate how GM's headlight knob defaults to Auto, and clicks back if you turn your headlights off.

Rental car sure, cause that's what'd I'd expect a rental car to like, lol, would I plunk down cash for it to enjoy for the next 5 years? prob not.

Def gave a nice buick type feel in ride type that loved loved loved highway miles, even though many say the NMS has buick type float.

The CVT def had some "judders" as it was adjusting those disks with constant throttle application at say 2500 RPM and going from 10 mph to 45 mph.

 

[Mass. Wine Guy]

Where did you end up going?

Warranty pick up the tab?

It was a bad fan control module. Made the car think AC was on and so ran radiator fan a lot. They’re ordering that and a new OEM battery. But the battery is $298 installed. After the switch is changed I could wait a day to do it myself??

I’d like to get the larger, more powerful battery. Is that easy to adapt to the mk7 battery tray? Any recommendations?

Oh yeah, I went to Commonwealth VW in Lawrence, MA. It was actually good dealing with them.

 

[Beewi]

I mean, if it's an optima yellow top, those are 300, easy. I have no idea what the OEM battery costs, but they can't be asking more than half an hour of labor, right?

Does your car have a wire for BMS? If not, and if you have a set of metric sockets it's an easy swap, just have to have an extension to get at the retaining clamp that sits at the bottom of the battery. Once it's swapped in you'll crank the steering wheel all the way left, then right to reset the angle sensor and clear the Christmas tree on the dashboard.

Just depends if the effort of jumping your car to leave the dealership, getting it home, and then running out to buy the replacement is worth the extra 60 bucks or so. AutoZone may not install for you because their computer sees a VW and tells them it's dealer only, because so many have a fancy BMS that requires coding.

 

[Mass. Wine Guy]

Not sure, but I think my own would be ok too. Anyone here with a 2015 SW who knows?

Is the 72 ah battery, part no. 000 915 105 DG, still sold? If not, what’s the replacement or equivalent?

 

[Mass. Wine Guy]

Back to the fan control module. Is this easily accessible from underneath? Where, how, what tools? The dealer ordered the part so I haven’t yet paid anything. How much will having them do it cost?

 

[ZippyNH]

Back to the fan control module. Is this easily accessible from underneath? Where, how, what tools? The dealer ordered the part so I haven’t yet paid anything. How much will having them do it cost?

They should have told you as they explained the problem.
Likewise you just discovered why putting a more $$$ battery is not always a great idea...an event beyond you control can destroy it.....some situations warrant it, but for many the OEM is a great choice.

At this point just let them do their job...ask a few questions, get it fixed and enjoy your car.

 

[dieseldonato]

Let them fix it.

 

[Mass. Wine Guy]

Let them fix it.

No doubt, this is the best possible advice.

I want the 72ah OEM battery.

 

[lemoncurd]

Not sure, but I think my own would be ok too. Anyone here with a 2015 SW who knows?

Is the 72 ah battery, part no. 000 915 105 DG, still sold? If not, what’s the replacement or equivalent?

that battery is just fine

my original battery with that PN lasted 10-11 years. i just replaced it last year ish, i expect to not have any issues again.

plus, the OEM battery was cheaper than any non-OEM replacement i could find (except for cheap batteries which i wouldnt trust)

the key to a long life with these batteries seem's to be not running them dead, and driving longer distances frequently.
your dead module killing the battery was just an uncommon scenario i imagine

 

[pedroYUL]

I want the 72ah OEM battery.

To do this, is just a matter of ditching the flimsy cover and relocating the hold-down clamp, one hole over (the hole is there).

 

[Mass. Wine Guy]

Just for everyone’s reference, the latest VW part no. For the 72ah battery is 000-915-089-F-DSP

 

[P2B]

Let them fix it.

+1 - especially since there's a good chance the bad FCM diagnosis is wrong.

 

[Mass. Wine Guy]

+1 - especially since there's a good chance the bad FCM diagnosis is wrong.

Meaning I can take it back if the problem stays. But wouldn’t they still charge me for what subsequent work is done?

What do you believe the issue is?

 

[P2B]

Meaning I can take it back if the problem stays. But wouldn’t they still charge me for what subsequent work is done?

What do you believe the issue is?

If they replace the FCM and the issue persists you can dispute any charges related to their misdiagnosis.

In my experience it is more likely the FCM is responding to a faulty input vs. detecting a non-existent input, but I don't have hands on so I'm just guessing.

 

[JM Popaleetus]

Just let the dealer do their job.

If you need a new battery, specify they use that part number you found. But otherwise, just let them do their job.

If they try to bill you for anything other than the battery say: “I figured this would be covered under the ‘dieselgate’ warranty as the fan control module is a requirement for the emissions control systems to work.”

Whatever broke triggered a CEL, which means you can’t pass emissions. Which means it’s covered if you have a backbone and press the issue politely.

 

[Mass. Wine Guy]

Just let the dealer do their job.

If you need a new battery, specify they use that part number you found. But otherwise, just let them do their job.

If they try to bill you for anything other than the battery say: “I figured this would be covered under the ‘dieselgate’ warranty as the fan control module is a requirement for the emissions control systems to work.”

Whatever broke triggered a CEL, which means you can’t pass emissions. Which means it’s covered if you have a backbone and press the issue politely.

Excellent point! As a native of NY City, I’ll do what I can.

And that battery number is what they provided to me for what they’ll install.

Quick update: Service guy says he already checked and can’t do it under warranty. Options?

 

[Cuzoe]

Argue that cooling fans are part of emissions equipment, which is why they run (and continue to run after shutting down) during a regen. As mentioned you had the CEL which means you can't pass emissions... which makes it covered.

They might be nice to deal with, and good at their jobs... but you are going to pay them more than VW will pay them for the work so fighting for warranty is not in their financial interest.

For what it's worth... most of the faults in that scan you posted would NOT cause a CEL so would not be covered. For example all those low voltage/function restricted due to low voltage faults. Normally would not be covered, as that could just happen from you leaving ignition (but not engine) on for a couple hours. But you did have a fault that generated a CEL and that's what matters. And the fault that generated the check engine light ALSO drained the battery so it should be covered in the same repair order.

 

[Mass. Wine Guy]

Ok. I’m happy to fight it. Next step is to contact VWoA. Dealer says they can’t do anything. Also, I have a legal plan benefit with my job. Is it worth contacting a lawyer?

 

[740GLE]

did you have CEL the dealer documented?

 

[Mass. Wine Guy]

No repairs have been done yet, so I have no paperwork at the moment. But I will.

 

[wonneber]

Don't thank me unless I'm right. Definitely call the dealer you trust ahead of time, and let them know you think it will be warranty work. I have no idea about book time for individual sensors. We're all just spitballing until you can get a scan tool on it.

Is there an Android version of VCDS?
I did not find it clear if there is or not at Ross-Teck.com

 

[wonneber]

Sitting at the dealer waiting. If the fault is related to the emissions system (wiring, connections, ?), causing the fan to run overtime and damage the battery (requiring a new one), all would be covered under the extended emissions warranty? HVAC totally out now, too.

Too early to know, but if they dispute this and make me pay, can I appeal to VWoA?

You could e-mail them.
The worst they could say denied.