Aargh, dead car, no power at all!
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Joined: Apr 2007
Posts: 213
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From: SF Bay Area
2015 GLK 250 BT
Aargh, dead car, no power at all!
Bad day today, absolutely no electrical power at all. The car (2005 E320-CDI) wasn't driven over the weekend and this morning I couldn't even open the trunk (power latch) nor turn the ignition key. After 30-mins, getting into the trunk and hooking up jumper cables, the car slowly started up. Odd that there was no power at all! I check whether any interior/exterior light or door was open, but none.
Could the battery been that weak, near dead, for being only 3-years old? Also noticed that when the engine did startup and charging the battery, the voltage read only 13.4V. That seems low. Should it be 14.5V?
Could the battery been that weak, near dead, for being only 3-years old? Also noticed that when the engine did startup and charging the battery, the voltage read only 13.4V. That seems low. Should it be 14.5V?
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Joined: Mar 2006
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From: Louisiana
03 E500 and Corvette
Either
bad battery or draw on the system.
The battery could have a dead cell. I have had them fail in 6 months and one is still going 10 years.
There is an issue with seat relay failing drawing bat power down.
bad battery or draw on the system.
The battery could have a dead cell. I have had them fail in 6 months and one is still going 10 years.
There is an issue with seat relay failing drawing bat power down.
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From: Toronto, ON, Canada
MY2001 C320
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Thread Starter
Member
Joined: Apr 2007
Posts: 213
Likes: 4
From: SF Bay Area
2015 GLK 250 BT
UPDATE; back from the dealer on this no power/battery problem.
Turns out the BCM had low voltage codes and thus required software update to increase the charging voltage. And from what I can tell with my trusty voltmeter, its was charging 13.4V before and now its at 14.0V
We'll see whether this is sufficient enough of a fix. I was hoping that they would have replaced the batteries since they're so expensive!
Turns out the BCM had low voltage codes and thus required software update to increase the charging voltage. And from what I can tell with my trusty voltmeter, its was charging 13.4V before and now its at 14.0V
We'll see whether this is sufficient enough of a fix. I was hoping that they would have replaced the batteries since they're so expensive!
Member
Joined: Jul 2007
Posts: 242
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From: NJ, USA
2004 E500 4matic
UPDATE; back from the dealer on this no power/battery problem.
Turns out the BCM had low voltage codes and thus required software update to increase the charging voltage. And from what I can tell with my trusty voltmeter, its was charging 13.4V before and now its at 14.0V
We'll see whether this is sufficient enough of a fix. I was hoping that they would have replaced the batteries since they're so expensive!
Turns out the BCM had low voltage codes and thus required software update to increase the charging voltage. And from what I can tell with my trusty voltmeter, its was charging 13.4V before and now its at 14.0V
We'll see whether this is sufficient enough of a fix. I was hoping that they would have replaced the batteries since they're so expensive!
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C350
UPDATE; back from the dealer on this no power/battery problem.
Turns out the BCM had low voltage codes and thus required software update to increase the charging voltage. And from what I can tell with my trusty voltmeter, its was charging 13.4V before and now its at 14.0V
We'll see whether this is sufficient enough of a fix. I was hoping that they would have replaced the batteries since they're so expensive!
Turns out the BCM had low voltage codes and thus required software update to increase the charging voltage. And from what I can tell with my trusty voltmeter, its was charging 13.4V before and now its at 14.0V
We'll see whether this is sufficient enough of a fix. I was hoping that they would have replaced the batteries since they're so expensive!
When you really drain the battery it is normal for the alternator to charge at lower voltages. normal charging voltage is 13.8 - 14.4 volts with the battery above 75% charged.
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