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Discussion summary
YOUR RESEARCHWeird LCD Display Effect
Leading reported evidence
Disconnect battery
Suggestion or failed attempt
No successful repair reported for this finding.
0
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0
Unsuccessful attempts
1
Discussions
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Suggestion
Try disconnecting the battery, which may reprogram the ECU when the power is reapplied.
Leading evidence: 'Disconnect battery' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Disconnect battery' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.
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Disconnect battery or maybe see about having the ecu reprogrammed
Suggestion or failed attempt
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0
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Unsuccessful attempts
1
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Suggestion · Original poster
Come spring, if the problem persists (or if the tach doesn't work), I'll try disconnecting the battery or maybe see about having the ECU reprogrammed.
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Suggestion
Told by "stealer" that if they had to replace the ECU it would be covered, but reprogramming is not covered.
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Suggestion
It could also be effected by an electrical current gremlin from lack of use while in storage and on a battery tender.
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23 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
Rennlist: 1 discussions
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This afternoon I got a letter in the mail from my insurance company asking me to provide them with some mileage information. So I got in the car to get the reading from the odometer and found a constellation-like effect on all three LCD readouts.
Now, except for yesterday and today it's been
real
cold here lately. The car has not run and the screens have not been turned on since since putting it away in mid-November. For what it's worth, it has been on a battery maintainer the entire time.
Is this cause for concern (read: impending failure)? Do those of you that drive your cars in winter/cold temps get this effect?
It's slightly harder to see the further away you get
I had a problem similiar, The dials all went crazy and the tach did not register. The car (04C4S) was still under CPO and took it to the "stealer". Picked up the car and the "service" manager told me that they had to reprogram the ECU at a cost of $150, which was NOT covered by CPO. Told by "stealer" that if they had to replace the ECU it would be covered, but reprogramming is not covered. Try disconnecting the battery, which may reprogram the ECU when the power is reapplied. But if your car is an older 996 you will need a radio code.
Come spring, if the problem persists (or if the tach doesn't work), I'll try disconnecting the battery or maybe see about having the ECU reprogrammed. Thanks for the insight. Sorry to hear about your experience.
Believe me, I'm with you guys on the mileage thing. I bought it in April with 10,1xx miles! So it's not like haven't been trying to put some miles on; a little over 4k in about seven months or so.
Ask a dealer what they might know. Not that you have to believe bring it in for replacement if they say so. Might just be a flukish thing. You know, like electric goose bumps hehehe.
If you have an after market stereo amp installed maybe try rerouting some wires. Manual says no more than 5 watts rf runs and that considered to be in a shielded coax so I'd figure some of their stuff is touchy to interference.
I'd wait until the temps warm up before trying any fix (unless your car is under warranty and its clock is ticking). I've heard the LCD can be effected by the cold, and in extreeme cases the cells can rupture. I've seen several 986/996 LCDs with a snowflake or crescent shaped flaw that I assume is the result of the cells "bleeding" into each other.
It could also be effected by an electrical current gremlin from lack of use while in storage and on a battery tender. Either way I still take a wait and see approach until you're put it back into normal service and see if it clears up on its own.
I'm guessing it's been brought about by the cold and non-use. Liquid crystal can do strange things sometimes, although I've never seen a speckle pattern like that before (temps usually affect the contrast, not bleeding or spotting of the LC). Let it warm up and run it for a bit and see what happens.
Thanks for your comments/suggestions, guys. I'm going to wait until I pull the car out in the spring before doing anything about it.
Jon - I like your style, but I think it would be better suited to the digital speed readout.
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