Pre-heating icon flashes - Club Touareg Forums
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post #1 of 14 Old 01-20-2019 Thread Starter
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Pre-heating icon flashes

Hi, have a 2016 150Tdi with 54,000 kms.
Twice now after a cold start, within 200 metres of home the pre-heating icon has started flashing. Both times I stopped the vehicle, turned the engine off, waited for 30 secs, restarted the car & icon went out as normal & stayed off.
The manual states that it is an “engine management fault” that needs to be checked. I will be ringing the dealer tomorrow as it is still under warranty, but wondered if anyone else had struck the same issue?
We are going away in about 8 weeks for 6 months with a caravan & don’t want any faults to follow us if possible.
Thanks in advance.
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post #2 of 14 Old 01-20-2019
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You've to read the fault codes. Without those it would be just wild guessing what was wrong with your car.
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post #3 of 14 Old 01-20-2019
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Sounds like a possible glow plug issue. It should show up during a scan to point you in the correct direction.
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post #4 of 14 Old 01-20-2019 Thread Starter
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Will have to wait for the dealer to check it as I don’t have anything myself.
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post #5 of 14 Old 01-21-2019
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post #6 of 14 Old 02-26-2019
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this happened to me once during normal highway driving once in very cold (<0F weather), i lost all power and engine acted like it was running on no boost. i pulled over and started engine again and nothingn, never happened again since a month. i'm also interested to hear if you have more details
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post #7 of 14 Old 02-26-2019 Thread Starter
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Hi commedeschatons
Have had the vehicle inspected by the dealer (after waiting for 3 weeks); diagnosis is some exhaust connections below the manifold are faulty. It is going back in on the 4th for a week to have the engine removed, inspections made, parts ordered (including possibly a new manifold on one side) & hopefully back by Friday.
As we are leaving for a 6 month trip with our van on the 21st I hope that they can fix it then.
The service manager showed me what looked like pages from a service bulletin to show the parts they suspected were at fault so maybe mine is not an isolated fault??
Our icon has only appeared during first startup in the morning, never had it occur during normal driving, thought we rarely get down to zero here!!
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post #8 of 14 Old 02-26-2019
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I've had mine flash tonight after an aggressive acceleration in S mode to merge with fast moving traffic on the hwy. Cold temps ~ -10c
No noticeable difference in engine performance, but the coil light kept flashing. I kept driving for another 20km to my destination and parked as usual. Upon leaving a few hours later, the light was off. I floored it a few more times during my drive home, but it still hasn't come back.

I will scan it later this week to see if any codes were stored, etc.
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post #9 of 14 Old 02-26-2019
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The flashing coil icon is normally meant to indicate some sort of engine malfunction, not just the glo-plug system. If the fault is intermittent it may clear after driving although a code should be stored. The fact that it is flashing usually means immediate attention is required but, until you find out just which part has messed up, you are unsure if it even 'real'.

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post #10 of 14 Old 03-02-2019
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Quote:
Originally Posted by TurboABA View Post
I've had mine flash tonight after an aggressive acceleration in S mode to merge with fast moving traffic on the hwy. Cold temps ~ -10c
No noticeable difference in engine performance, but the coil light kept flashing. I kept driving for another 20km to my destination and parked as usual. Upon leaving a few hours later, the light was off. I floored it a few more times during my drive home, but it still hasn't come back.

I will scan it later this week to see if any codes were stored, etc.
Well, I finally got around to pulling the codes off mine. Looks just like a sticky actuator, and since it's gone away and not reoccurred since, I'm not gonna investigate any further at the moment. It's possible that my usual granny style driving was a contributing factor, or the cold might've helped too.....

Quote:
Originally Posted by VCDS
-------------------------------------------------------------------------------
Address 01: Engine (J623-CNRB) Labels:. 059-907-401-V2.clb
Part No SW: 7P0 907 401 K HW: 7P0 907 401 K
Component: 3.0TDI FSA H21 0011
Revision: 56H21---
Coding: 292A4012233600050000
Shop #: WSC 93288 999 00000
ASAM Dataset: EV_ECM30TDI0117P0907401K 001012
ROD: EV_ECM30TDI0117P0907401K.rod
VCID: B777000D0EDB83F2A4-80E2

2 Faults Found:
9123 - Throttle Actuator Control System
P2112 00 [096] - Stuck Closed
Intermittent - Not Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 1
Mileage: 108971 km
Date: 2019.02.26
Time: 17:28:31

Engine speed: 1598.00 /min
Normed load value: 51.0 %
Vehicle speed: 97 km/h
Coolant temperature: 93 ∞C
Intake air temperature: -1 ∞C
Ambient air pressure: 990 mbar
Voltage terminal 30: 14.660 V
Unlearning counter according OBD: 35
Air mass: actual value (mg/stroke): 725.0 mg/stroke
Throttle valve adapter: specified value: 22.14 %
Throttle valve adapter: actual value: 64.26 %
Throttle valve adapter: offset closed: 0.04 %
Throttle valve adapter: status-Bits 0-7: 0
Throttle valve adapter: status-Bits 0-7: 0
Throttle valve adapter: status-Bits 0-7: 55
Throttle valve adapter: status-Bits 0-7: 8
Throttle valve adapter: uncond voltage actual value: 2873.8 mV

9124 - Throttle Actuator Control System
P2111 00 [096] - Stuck Open
Intermittent - Not Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 1
Mileage: 108971 km
Date: 2019.02.26
Time: 17:28:31

Engine speed: 1599.00 /min
Normed load value: 51.8 %
Vehicle speed: 97 km/h
Coolant temperature: 93 ∞C
Intake air temperature: -1 ∞C
Ambient air pressure: 990 mbar
Voltage terminal 30: 14.720 V
Unlearning counter according OBD: 35
Air mass: actual value (mg/stroke): 727.8 mg/stroke
Throttle valve adapter: specified value: 22.11 %
Throttle valve adapter: actual value: 75.54 %
Throttle valve adapter: offset closed: 0.04 %
Throttle valve adapter: status-Bits 0-7: 0
Throttle valve adapter: status-Bits 0-7: 0
Throttle valve adapter: status-Bits 0-7: 55
Throttle valve adapter: status-Bits 0-7: 44
Throttle valve adapter: uncond voltage actual value: 3422.0 mV

Readiness: 0 0 0 0 0

-------------------------------------------------------------------------------
I'd still suggest getting yours scanned just for piece of mind. You really are in the dark without those details.
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