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9th April 2009, 15:33 | #21 |
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Hi Jules, I must admit I have not tried to changing over the chips yet I will give that a try.
As for the battery, I have had it off several times, so I should think it will rule out ECU's ECT, but I will give the chip swap. Thanks Tony |
9th April 2009, 16:53 | #22 |
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just dismantle the case and swap covers....don't try and take the transponder out.....I would suggest a blob of tippex to mark one so you know which one is which...
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9th April 2009, 17:01 | #23 |
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David Impecunity is the mother of ingenuity Useful how to's for common problems Car Of The Month Jan 2014 [SatNav Power Down] [Coolant Level] [SatNav Repair] [Diesel Non Starting] [Paint Codes] [Rear Light Seals] [Reversing Light Switch] [Bleeding Brakes][Sunroof Drain] [Early ZT's][Instrument Pack Diagnostics][ATC Diagnostics] |
10th April 2009, 11:22 | #24 |
I really should get out more.......
BMW I3 Join Date: Nov 2006
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No luck with swapping chip over, the original key now works, but the replacement key is no longer working, so it must be the immoblizer chip that needs re-coding, now all I have to do is find some way to get clip coded?? anyone apart from Lates have a T1?
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10th April 2009, 11:43 | #25 |
I really should get out more.......
Now Other Manufacturer Join Date: Nov 2006
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The immobiliser ECU is manufactured with the code of ten possible chips, the details of those codes are kept by BMW in Germany, any new key is supplied with the next available code (which is why the keys take so long to come from Germany)
There is nothing in the immobiliser ECU or the chip that can be programmed by T4. I wonder if it is the immobiliser ECU that has 'lost' the details of the chip, have you tried disconnecting the battery for a while as suggested by Jules? |
10th April 2009, 22:15 | #26 |
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I think we are a bit muddled forget T1 or T4 both do the same thing for keys
You did not say if the remote plip still works as that is the bit that is coded to the car using the barcode and yes using T4 you can read existing bar codes already coded to the car and in that way match them to an existing key if necessary However you say the car is imobilsed that is nothing to do with the barcodes or T4 it is purely down to the chip as said earlier this is not coded to the car by T4 and I supsect your chip is simply faulty. |
11th April 2009, 00:00 | #27 |
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Hi Keith
Tony does say in post #1 that the remote blip part works, so it is looking like transponder IC is up the duff. Am I right in saying the codes don't constantly change in 75 ZT blips like they did with the 600 & 800 range blips? As they could sometimes get "out of step" Funnily enough my sisters R600 was immobilized only last month! She called me as she luckily had only stopped at the Petrol station 1 mile away from here. Reported the green key just flashing on the dash, and the starter inhibited. Mystery is, when I got down there with my whole tool kit, all I did was remove the key, locked the doors manually with the key then put it back in the ignition & Hey Presto it started OK. (her remote blip part has been duff for over a year but the system carries on working just with the transponder key)
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