You need to have the battery load tested using a carbon pile. Should not drop below 10.5 volts at 200 amps load. You 12.5 volts means nothing. Have battery tested using old style carbon pile tester.

 

Will do ! Just lurking for that Write Up or shop manual to get that Knock Sensor swap done .

 

Is there a specific section I should be asking this in ?

 

I just had my 2015 sonata in for an oil change and they installed the new ecm update. After driving away from the dealership it went into limp mode too. I limped back to the dealership and now have a loaner car while they figure out if they can proceed with the suggested harness check for the knock sensor or an engine replacement. My vehicle is not on the list of vehicles on the campaign they tell me. So why the need for the update then? Good luck, but be careful because from what I’m reading and learning, this could be an issue with the theta engines leading to total failure for some it seems.

 

Already posted in past,, my opinion,, SCREW THE 953 Recall...


DONT DO IT..

 

Yeah I was requesting a roll back on the update they said, no go. Am trying to see if a used ECU would be possible without the update.

 

I'm posting this in multiple places where this issue is being discussed.

So, this week, I was informed that Hyundai told the dealership to replace a harness and the knock sensor. They mentioned Hyundai wanted them to test the fuel system to check things and possibly replace the oxygen sensor based upon the results of the test, just in case. Yesterday I got the call that the patch harness and knock sensor were replaced, and no other replacements were required. I need to go pick up my car.

I also called the Hyundai Safety Recalls and Service Campaigns line (https://autoservice.hyundaiusa.com/C...Campaign/Index, (855) 671-3059) and spoke to an agent who explained the details he had for the service campaign 953. The campaign is to install software to use the knock sensor to detect premature rod bearing wear. I had read that online at the service campaign website, but now that my vehicle has completed the campaign, that detailed information is no longer available. There was a pretty good FAQ attached to the campaign that I wish I had saved.

So, it seems Hyundai is looking for 2015 Sonata engine failures with this campaign, and that the failure is the same issue that they had on the 1.2 million recalled 2011-2014 models. My dealership said there is no end in sight for the replacements they have been doing on those model years.

The dealership doesn't seem to know exactly what the campaign is for, as I've never had them provide me any details about rod bearing wear when I asked about the need for the update. And, they have no explanation when I talked to them on the phone about how this patch harness and oxygen sensor replacement solves some unknown issue after installing the software update. I can speculate, but I don't have enough information to back my speculation. I hope to be able to talk to someone more informed than the service agent at the dealership when I go to pick up my vehicle.

But, thanks to this forum and the internet, I am more aware of this issue and will certainly be more closely watching my oil level and color than I have been if I decide not keep the vehicle long term.

 

The campaign is to install software to use the knock sensor to detect premature rod bearing wear.

It may not hurt to get a UOA to establish any out of normal wear metals that relate to rod bearing - or at least a base number. You can get a kit from NAPA for about $15, then send it to ALS Tribology. It only comes with sample bottle not a siphon to use through the dip stick tube. If you have a Fumoto you could get a small stream from the valve into the sample bottle.

I also think the multi-task of knock sensor is useless, but I'm not in Hyundai engineering. It's tough to have to guess when you're not getting full info from dealer or Hyundai.

 

One of my advisor told me that we aint doing 953 unless specifically ask by customer to perform recall

As noted.. Hyundai is trying to multi-task knock sensor.. modify knock logic in PCM to distinguish rod knock Hz fequency and std engine knock Hz frequency for ignition timing... Why do we need this multi task ?? We know what rod knock sound like, I guess Hyundai want to shut down engine before we go drive in traffic and seize engine ??

Engine seize on road is not any call for panic,, roll it out to side of road,, all done.. we all as informed drivers should know what happen when loss of power, and how to react in said situation,, car will still roll, car will still steer (lack of assist),, and car will still stop (lack of assist on pedal due to vacuum loss.. dont use pedal till needed-- plan stop to be long)

Phone people at Hyundai Motor is generally just contract phone answer people

 

In my mind this indicates just how badly defective these engines are - could well be over time every one of them will experience bearing failure and this ecm update shows that Hyundai is aware of this and is taking measures to try and predict failures before there are more accidents and possibily fatalities. Yeah saying people should know how to handle a car in case of engine shutdown is great but history shows some will panic and lose control of the vehicle - and Hyundai is going to be sued should this happen.

Ironically when the recall sound test campaign was announced I half in jest said they should be required to install a bottom end rod knock sensor - instead Hyundai is doing a CYA and trying to do it cheaply, the only real remedy is replacing each and every engine in the 2.4m vehicles. This debacle is going to continue for years to come.

 

So after doing the New Update to the ECU may car has gone into LIMP MODE due to a faulty Knock Sensor. The the code was being posted before I did the ECU Update .As my car is at 66k am SOL for warranty .The DEALER wanted 140 for OBD diagnostic wanted 420 for an AGM battery cause mine is to old and not holding charge.A new air filter for 120 .My battery holds charge and reads at 12.5 volts and my alternator out put is on point .

They wanted all of this before telling me what I already new that my Knock Sensor crapped out .

TLDR: Looking for a Knock sensor replacement write up .

It is located under the intake plenum on my 2015 Sonata 2.0T Hyundai wants about $600-$800

 

Knock sensor should be covered under one of 3 different warranties
1) The original 60mo/60k miles warranty
2) It may be covered under California's 7yr/70k mile emissions warranty, y our state may vary.
2) If you have had the software update done by Hyundai, I believe Hyundai will cover the knock sensor against defects. Check with corporate customer care, not your local dealership.
3) the PZEV engines (I know my 2017 2.4L is PZEV, not sure about other years) have 15yr/150,000 mile warranty on emissions-related parts. PZEV emission warranty
More on PZEV warranty

Note the Bold typeface from a partial copy of the 2nd link above:
Model Year 2010 PZEV Warranty




The PZEV warranty is the Partial Zero Emissions Vehicle warranty. What this warranty does is provides warranty coverage for 15 years or 150,000 miles, from the original in service date of the Volvo, for all of the emissions components. This warranty has been in effect since 2003 for certain states. In order for the car to qualify for the PZEV Warranty, it needs to have the specific engine code that was certified as a partial zero emissions vehicle in a certified PZEV state. These qualifying states and engine codes vary from year to year. If you purchase a PZEV Volvo and then move to a state that is not a certified PZEV state, you will no longer have the PZEV Warranty coverage.
Please see below for the engines, states, and covered components for Model Year 2010:
Engine VIN codes 39 & 96 are eligible if sold and registered in California, Massachusetts, Maine, Vermont, Connecticut, Rhode Island, New Jersey, and New York

Covered Emissions Components:

• Fuel and Ignition System:
• • Engine Control Module Hardware, Engine Control Module Software, Fuel Pump including Pressure Regulator, Fuel Pump Electronic Module (PEM), Fuel Filter, Fuel Injectors, Fuel Rail Pressure and Temperature Sensor, Intake Air Temperature Sensor, Ambient Temperature Sensor, Manifold Absolute Pressure Sensor, Mass Air Flow Sensor, Electronic Throttle Module, Oxygen Sensor, Brake Control Module (manual transmission models only), Spark Plugs, Knock Sensor, Crankshaft Position Sensor, Camshaft Position Sensor, Central Electronic Module, Intake Manifold, Throttle Position Sensor, Idle Speed Control Valve, Engine Coolant Temp Sensor, Ignition Coil/Power Stage, CVVT Timing Unit, CVVT Solenoid Valve, Crankcase Pressure Control Valve

 

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