Electronic Throttle Control Light - problem - Chrysler 300C Forum: 300C & SRT8 Forums
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post #1 of 18 (permalink) Old 11-25-2018, 12:45 PM Thread Starter
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Electronic Throttle Control Light - problem

Hi,

I took my 2007 Chrysler 300C for a drive today. After a few miles the ETC light came on and the engine cut out. I was unable to restart it, engine turned, sounded ok, but wouldn't fire up. The ETC light was continually flashing. I left the car for an hour and tried again, but still the same, so had to call the breakdown company to get relayed back home.

There are no system warning messages on the dashboard.

Please can anyone give me suggestions as to what the problem may be? Should I see some error codes somewhere? Will I just need to let my independent garage plug in their diagnostic gadgets to find the problem?

I have read various similar messages on the forum but most people seem to have error codes and it is often more about stalling rather than the engine not starting at all.

Hope someone can help, please!

*** Just as an extra note, the car has sometimes been a bit difficult starting, but only every now and again.
Generally turns OK, but sometimes takes 7 or 8 seconds before firing up.

Last edited by AB77; 11-25-2018 at 12:54 PM.
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post #2 of 18 (permalink) Old 11-26-2018, 04:48 PM
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If it's a CRD, the difficult starting could be glowplugs; starting can be surprisingly sluggish with 2 or 3 dead. However, there's something more serious causing the failure you're now experiencing. Totally random guesses on my part would be fuel starvation, crankshaft position sensor or immobiliser. But a code reader would really help (and will also pick up any dead glowplugs!)
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post #3 of 18 (permalink) Old 11-27-2018, 01:18 AM Thread Starter
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Thanks talldave, really appreciate your suggestions.

Car is now at my local independent garage to do a diagnostic check. Read on the forum yesterday that I could have done the "key dance" to get the code, so will remember that next time!

Also read about the secondary menu options available (music note button and compass button). Re. The crankshaft sensor, it was suggested that if the rev counter on this menu shows a number when cranking then the sensor should be ok. My shows around 100 so am assuming this is ok.

Will wait to see what the garage says and will update when diagnosed.

Thanks again.
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post #4 of 18 (permalink) Old 11-27-2018, 01:42 PM
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The key dance doesn't work on the CRDs, so a cheap Bluetooth OBD2 interface and torque pro on your 'phone is an economical way to access codes. Let us know what comes back from the garage!
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post #5 of 18 (permalink) Old 11-28-2018, 07:59 AM Thread Starter
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Thanks again talldave for the very useful info.

It is a CRD so shame the "key dance" does not work.

The garage tested today and found that the battery was on it's last legs (CCA was virtually 0). As a result the diagnostic check threw out about a dozen codes, most of which, we think (and hope!!!), are red herrings due to the battery condition.

So I have ordered a new battery today and will fit it tomorrow to see what the diagnostic check shows.....probably highly unlikely, but maybe the engine cut out is due to the battery.

I took the battery out of the car for the test and then remembered I don't have the radio code from the previous owner, but luckily I put the old battery back in within about 1 hour (it still has a little charge) and the radio still works and I didn't need the code!
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post #6 of 18 (permalink) Old 11-30-2018, 02:40 PM Thread Starter
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Got the car back today.

The new battery resolved all the diagostic errors. Garage foud that fuses 5 (headlight washer) and 15 (ignition) had blown. Changed both and the car sees to be running fine......at the moment.

I have been reading up on other people havng problems with fuse 15 which seems to be the cause of my problems.

I am hoping that it was the battery failure that somehow caused the fuse to blow but if not I am prepared with a few spares fuses in case it happens again.

If it blows again, I guess there may be a short somewhere, which I have read may be difficult to trace.

Waiting with intrepidation!
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post #7 of 18 (permalink) Old 12-17-2018, 04:20 PM Thread Starter
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.....3 weeks later, the ETC control light is flashing again today as well as the orange engine light.

The good news is the car is still running, Fuse 15 hasn't blown, but I think it is in limp mode as I do not have full engine power.

I got the car home and left the car for a few hours but still the ETC light flashes and the orange engine light is on.

No error messages on the dash, just "System OK".

I will have to take the car back to my local garage tomorrow for another diagnostic check, but would really welcome any thoughts as to what the problem might be.......I have been reading up loads of forum posts and am thinking maybe glow plugs or swirl motor but that is just me guessing.

.....update: just found the "hidden menu" and see the last chime was due to Glow Plugs, so guess I need to replace these (car has done 110 k miles, assuming they have never been replaced). Will wait for garage to confirm though.

Very many thanks for any suggestions.

Last edited by AB77; 12-18-2018 at 01:21 AM.
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post #8 of 18 (permalink) Old 12-18-2018, 06:17 AM
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Bad glowplugs will only affect starting, the glowplug is usually the last "bing". You need a code reader to have them checked.

Far more likely to be the swirl motor especially if you still have the original orange seals in the turbo inlet.
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post #9 of 18 (permalink) Old 12-18-2018, 07:58 AM Thread Starter
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Many thanks DGO for your views on this, much appreciated.

I have been googling the swirl motor this morning as that seemed to be a common issue, but must confess having read a few articles I am still a bit unsure what/where it is and how to fix it.

I have fund this post which mentions fitting a "swirl motor bypass resistor". Is that the likely way to fix it?

https://www.300cforums.com/forums/cr...e-control.html

Still waiting for a call from the garage with the codes.

I see the Custom Shop sell this: http://www.custom300cshop.co.uk/chry...temulator.html

If it is the swirl motor, is the best fix, do you know?

Thanks again.

Last edited by AB77; 12-18-2018 at 08:04 AM.
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post #10 of 18 (permalink) Old 12-18-2018, 08:44 AM
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I had problems with swirl and egr and the flashing bolt light, mine had limp mode for ages as well. The limp mode was due to a broken turbo, I had the orange turbo seal and oil had deteriated the rubber and bent some turbo blades.
I had both swirl and egr resistors inplace but now have reverted back to original items as the engine light would keep coming on.
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