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Model specific boards => Golf mk4 => Topic started by: djmagpie on 16 December 2012, 14:35
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help needed had the code 17978 come up on my car a few weeks ago and car wouldent start but by cold booting it it would start by now imb his come back on and cant get it off searched the net flat out and seems like a lot ov people have had this problem but cant seem to seem any one thats sorted it out .i know wat the code is just need to know how to fix this asap cheers
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17978/P1570/005488 - Engine Start Blocked by Immobilizer
Possible Symptoms
Engine starting but stalling immediately
Possible Causes
Key(s) not matched
Instrument Cluster not matched
Engine Control Unit (ECU) not matched
Engine Control Unit (ECU) Power Supply faulty
Possible Solutions
Check for Fault Codes in Immobilizer itself (part of Instrument Cluster in many cars, but separate Immobilizer Control Module in some)
Check Immobilizer Measuring Values (usually in Instrument Cluster OR Immobilizer Control Module)
Match Key(s)/Instrument Cluster/Engine Control Unit (ECU)
Check Engine Control Unit (ECU) Power Supply (Relay)
Special Notes
In case of Engine Starting Issues please make sure that you are really experience an Immobilizer related Problem! Even if the Immobilizer engages, the Engine will still start fine but cut out after 2-3 Seconds. If you are NOT experiencing this behavior (e.g. Engine doesn't start at all) your Problem is very likely NOT Immobilizer related.
May be stored in Combination with 01176 - Key: Signal too Low in Immobilizer Control Module.
If no other immobilizer related fault codes are stored and the immobilizer related meas. blocks are fine except Engine Start not allowed, in rare occasions it helps to try cold-booting the car. Remove both battery cables from the battery. Short the battery cables together (away from the battery) for about 15 seconds. Reconnect the battery. (Example)
Low battery voltage (including a faulty battery) may cause Immobilizer system malfunctions and testing should be done only with a known good battery installed.
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Might want to try taking the key apart and either re-seating the battery or replacing it, I had a similar problem with mine a while back that seemed to do the trick. Do you notice an lights on the dash before you crank it?
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replaced batterys in both ov my keys wen i had the problem b4 about 2 weeks ago ,, cold booted it 4 about 20 mins on sunday and got the car sorted and been starting fine but i knows im going get this problem bk just looking 4 a fix or wat to do nxt vag com ??? wants to start spending some money on getting some more power but first i wants sort out all these issues cheers 4 replys