3 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHStrange electrical Q?
Leading reported evidence
Replace increase, resistance
Suggestion or failed attempt
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that contain suggestions
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Suggestion
These thermistors change, increase, resistance with temperature, mostly due to high stalled motor current flow, but also due to ambient temeprature levels.
Leading evidence: 'Replace increase, resistance' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Replace increase, resistance' (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.
Source reports, not a diagnosis or a success probability. Counts refer to discussions and can overlap.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that contain suggestions
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion · Original poster
I did the timing using a stopwatch feature on my cellphone.
These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.
Replace increase, resistance
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion
These thermistors change, increase, resistance with temperature, mostly due to high stalled motor current flow, but also due to ambient temeprature levels.
Counts describe captured discussions, not unique people or a diagnosis. Author identities are not reliably stored. Exact duplicate evidence is counted once across matching discussions; one discussion counts at most once per action/state. Multiple repairs reported together remain a combination. Suggestions and failed attempts do not establish a fix. Matches cover whole discussions and can include related faults, model variants and incomplete threads.
3 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
Rennlist: 1 discussions
0 evidence records excluded for query context · 0 excluded by outcome qualification · 0 adjusted by outcome qualification.
1 acknowledgements have no verified action link; they do not establish a repair result.
Hi everyone,
I've just finished up the "one-touch top down" mod on my Cab. Part of this mod involves timing the up and down operation for programming into the device that will replicate the up/down button pushing (basically a big latch). I'm no stranger to degrees in EE, CE and CS but something in this struck me as odd. Let me explain.
I did the timing using a stopwatch feature on my cellphone. The first time I did the timing, I went out to the garage, started the car up cold and measured up and down several times. There was not much deviation in the measured times so I took the worst case and sent that in to be programmed.
I received the programmed unit, installed it and tested it (cold start). Worked fine. Then I took the car out for a run. Upon return, the top-up operation stopped just short of closing the windows. That's funny, it worked when I cold started the car??? I repeated down and up. Same result. Hmmmm... I turned the car off. Next day, I started the car cold and what do you know, up and down worked perfectly! What??? I then took the car out for a run and again upon return, the up operation fell just short of closing the windows! I retimed the up/down operation after the car had been driven and it was roughly about 0.7 seconds longer than cold start.
Radio On/Off made no difference. The headlights were never on. Why would the timing be longer after the car had been driven, only to be shorter again after the car sat and got cold? I had thought driving the car would recharge the battery (isn't that what the alternator is doing?)??
In any event, I had my device reprogrammed with (very exact) longer timings and it works perfectly now, so all has ended well. I just don't like nagging unexplained events...
Thanks.
Thermisors at work....
Many of the electric motors in today's vehicles have protective resistors, thermistors, to protect the motor and circuit if someone ( 6 year old grandchild??) inadvertantly holds the control button down long after the device has reached the end stop, end of travel.
My 01 AWD RX300 shows one in series with each of the window motors.
These thermistors change, increase, resistance with temperature, mostly due to high stalled motor current flow, but also due to ambient temeprature levels.
Got it?
