Does anyone else have this problem: Auto dimming dash lights?
10-26-2012, 10:16 AM
#1
Rennlist Member
Thread Starter
Does anyone else have this problem: Auto dimming dash lights?
I started the car this morning (after letting it sit for about 5 days connected to a trickle charger) and turned on the lights. Started driving and then the dash lights would dim to nothing but the needle/tach lights would still be on. I tried the combination of turning on my headlights, foglights and all the other lights work... it's just my dash light would go dim intermittently... and then come back on sporadically. Any one else have experience this issue? Thanks
Edwin
Edwin
Last edited by m32; 10-26-2012 at 10:40 AM.
10-26-2012, 01:40 PM
#2
What kind of trickle charger? Some trickle chargers will invert polarity just for a microsecond. Negative Pulse Charging Used in conjunction with pulse charging, it applies a very short discharge pulse, typically 2 to 3 times the charging current for 5 milliseconds, during the charging rest period to depolarise the cell. These pulses dislodge any gas bubbles which have built up on the electrodes during fast charging, speeding up the stabilisation process and hence the overall charging process. The release and diffusion of the gas bubbles is known as "burping". Controversial claims have been made for the improvements in both the charge rate and the battery lifetime as well as for the removal of dendrites made possible by this technique. The least that can be said is that "it does not damage the battery". The problem is that the charger is hooked up to your system. The negative pulse could have had an effect on other circuits in your car. Our later Porsche models use Can Bus hi and lo signals to navigate or talk to modules, gateway, etc. Make sure your charger is a float type. It should say it in the box. I use the battery tender it's a float charger not trickle. It's ideal for lead acid batteries( car batteries). Stay away from pulse chargers!
10-26-2012, 02:18 PM
#4
Rennlist Member
Thread Starter
What kind of trickle charger? Some trickle chargers will invert polarity just for a microsecond. Negative Pulse Charging Used in conjunction with pulse charging, it applies a very short discharge pulse, typically 2 to 3 times the charging current for 5 milliseconds, during the charging rest period to depolarise the cell. These pulses dislodge any gas bubbles which have built up on the electrodes during fast charging, speeding up the stabilisation process and hence the overall charging process. The release and diffusion of the gas bubbles is known as "burping". Controversial claims have been made for the improvements in both the charge rate and the battery lifetime as well as for the removal of dendrites made possible by this technique. The least that can be said is that "it does not damage the battery". The problem is that the charger is hooked up to your system. The negative pulse could have had an effect on other circuits in your car. Our later Porsche models use Can Bus hi and lo signals to navigate or talk to modules, gateway, etc. Make sure your charger is a float type. It should say it in the box. I use the battery tender it's a float charger not trickle. It's ideal for lead acid batteries( car batteries). Stay away from pulse chargers!
I guess I will know for sure when I take it for a spin tonight when it's dark. If it darkens, then I know there's a problem
Edwin
