Can we jump start these cars?
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MBWorld Fanatic!
Joined: Mar 2007
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From: Sydney, Australia
Vath ML63 Brabus C63 SL63 CLK63BS C63BS
Can we jump start these cars?
I have left my CLK63 BS out in the country for a while, taken the car cover off and battery flat, can we jump start these guys with jumper leads? Anyone help?
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From: Ashburn, VA
C63 ///AMG P30
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From: Canada
07 E63 + 07 CLK63CAB
In an emergency I would say yes go ahead and boost the car, but if you have time remove the negative battery terminal and connect the battery to a charger, if inclined remove the battery from the car and charge it that way just in case of any shorting out of the cables within the trunk or under the engine cover depending on model. When away try a battery maintainer in the .75 amp range, will keep the battery fresh.
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From: Sacramento, CA
'09 C63
Always use a battery maintainer if possible when storing your car for a prolonged period of time.
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From: Canada
07 E63 + 07 CLK63CAB
You beat me too the answer tfthach13, some will just hook up to a dead battery with a vehicle that is running which besides the surge could be enough spark to ignite gases around the battery, or the driver could hook up the cables incorrectly and short out the battery, cause an explosion and be blind for the rest of their lives. So not being too dramatic if you have to ask do not jump any car unless you are confident doing so. A dead battery is a giant resistor, remove from the car and charge it using a proper charger, again in an emergency be very cautious.
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From: Toronto
09 C63, 11 Cayenne S
Just jump start where it's supposed to be and you'll be fine. Two terminals made for this in the engine bay. The positive has a red cover and the negative is close two the coolant reservoir
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From: Ashburn, VA
C63 ///AMG P30
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2017 Mini Cooper S Clubman ALL4 - British Racing Green
Soo much misinformation...
Yes, you can jump the car, no it will not destroy the electronics. Between the battery and pretty much everything, are voltage regulators. This will prevent surge scenarios from doing any damage.
At most, you can damage your battery by connecting the terminals directly to another battery. When jumping, positive to postive, negative (source) to grounded chunk of metal (destination).
In older cars, using a smaller battery was problem, insufficient current to crank the starter and poor voltage regulation caused problems. In our cars, the car just won't crank. I had that problem when the airport sent a V6 pickup (even though I specified a V8). Took about 20 minutes before my battery was charged enough to turn over.
Yes, you can jump the car, no it will not destroy the electronics. Between the battery and pretty much everything, are voltage regulators. This will prevent surge scenarios from doing any damage.
At most, you can damage your battery by connecting the terminals directly to another battery. When jumping, positive to postive, negative (source) to grounded chunk of metal (destination).
In older cars, using a smaller battery was problem, insufficient current to crank the starter and poor voltage regulation caused problems. In our cars, the car just won't crank. I had that problem when the airport sent a V6 pickup (even though I specified a V8). Took about 20 minutes before my battery was charged enough to turn over.
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Joined: Jun 2024
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Ml63 amg 2007
Ml63 amg 2007
I made the mistake of letting my battery die completely whilst being stored.The tow truck company used a heavy duty battery booster to try jumpstart it which failed but caused damage.I replaced the battery and the vehicle starts fine but will not engage into any gear just locked in park.Initially my radar detector and garage door openers on the rear view mirror and light did not work.I swapped the two yellow relays in the engine right side fuse box and the radar detector started to work but the transmission still seemed to engage but not actually allow to drive followed by an error.
In the process orpf replacing yellow relay as next step as one seems to have a burn mark on the top and swapping made the radar detector work.called the dealer said either transfer case or computer related.
any comments to try
In the process orpf replacing yellow relay as next step as one seems to have a burn mark on the top and swapping made the radar detector work.called the dealer said either transfer case or computer related.
any comments to try
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From: DFW
SL63
The sequence when jump starting should be performed from the mindset of keeping the circuit “cold” for as long as possible.
With this in mind, start by making ABSOLUTELY sure which battery posts are positive and which are negative.
You could easily not follow color convention with the jumper cables, and not get in trouble if you are careful, and paying attention, but in an ideal world, use the red jumper wire to connect positive to positive, and the black jumper wire negative to ground.
Connect dead positive to good battery positive. The circuit is half hot now, in a manner of speaking.
Connect good battery negative to dead ground. Only as an absolute last resort should the dead battery negative post be used as a ground. When you make the last connection, line it up first, then turn your eyes away from the battery as you connect.
During the whole process, keep the leads separate from touching each other, or the ground.
With this in mind, start by making ABSOLUTELY sure which battery posts are positive and which are negative.
You could easily not follow color convention with the jumper cables, and not get in trouble if you are careful, and paying attention, but in an ideal world, use the red jumper wire to connect positive to positive, and the black jumper wire negative to ground.
Connect dead positive to good battery positive. The circuit is half hot now, in a manner of speaking.
Connect good battery negative to dead ground. Only as an absolute last resort should the dead battery negative post be used as a ground. When you make the last connection, line it up first, then turn your eyes away from the battery as you connect.
During the whole process, keep the leads separate from touching each other, or the ground.
Last edited by MB2timer; Jun 26, 2024 at 02:32 AM. Reason: +4l
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Joined: Oct 2007
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From: Texas
10 C six trizzle
I made the mistake of letting my battery die completely whilst being stored.The tow truck company used a heavy duty battery booster to try jumpstart it which failed but caused damage.I replaced the battery and the vehicle starts fine but will not engage into any gear just locked in park.Initially my radar detector and garage door openers on the rear view mirror and light did not work.I swapped the two yellow relays in the engine right side fuse box and the radar detector started to work but the transmission still seemed to engage but not actually allow to drive followed by an error.
In the process orpf replacing yellow relay as next step as one seems to have a burn mark on the top and swapping made the radar detector work.called the dealer said either transfer case or computer related.
any comments to try
In the process orpf replacing yellow relay as next step as one seems to have a burn mark on the top and swapping made the radar detector work.called the dealer said either transfer case or computer related.
any comments to try
Pulling out and swapping random relays is just wasting time as you dont even know what they are for. Benz's very seldom have relay issues. It's normal to have some burn marks after thousands of cycles. They usually only get replaced when the component they control has a problem - like a secondary air injection pump or an airmatic pump.
