What happens if you reverse the battery leads?
When a car battery is connected backward, a fuse designed to protect vehicle electronics should blow. If your vehicle doesn’t have a fuse (almost all cars do) designed for this purpose, you will send electrical current backward through systems in your car, including ECU, transmission control unit, and more.
Why does my car not start with reversed jumper cables?
Q: Reversed jumper cables and now car won’t start even with a new battery. My car has an old battery that died. When jumping off the cable got reversed causing the battery to spark and the cables to get hot. I purchased a new battery, but the car will not start.
What causes a Mercedes Benz to not start?
In most cases you will get a fault code related to one of the following: 1 ECM / PCM computer failure 2 Camshaft position sensor 3 Shifter Selector module 4 Fault codes related to driver authorization or immobilizer 5 Electrical problems
Why does my Car start at 40mph?
When checking the oil on the dip stick you should be checking it in the same place and engine temperature in order to get correct readings. If you check the engine when its cold and then again when it is… There is a loud humming noise coming from from passenger side of car that starts at about 40mph.
What happens if you jump start a Mercedes Benz?
The problem is frequently a dead battery. Improper jump starting a Mercedes-Benz can cause electrical or control unit problems which can become expensive repairs. In this guide, we will show you different methods that you can safely jump start your car and get back on the road.
Can you jump start a car if the battery is dead?
Here are your options on how to get the car running again. If you need to get back on the road quick, you can start the car using jumper cables. The problem with this method is that if the battery is completely dead, jump starting can shorten the life or even damage the battery.
In most cases you will get a fault code related to one of the following: 1 ECM / PCM computer failure 2 Camshaft position sensor 3 Shifter Selector module 4 Fault codes related to driver authorization or immobilizer 5 Electrical problems
Can a Toyota Sienna have a dead battery?
In reality, it is NOT something most owners can rely upon as a “safety net” to help them remember to turn off the interior lights. If you place your faith in it, you will likely experience dead batteries on a frequent basis.
What should the voltage be on a Toyota Sienna?
It should be a little above 12 V. Then turn the engine on and running, check the voltage again. It should be a little over 13 V, but under 14 V. If you’re at the same voltage or lower with the engine running, then your alternator is bad.
Are there any recalls on the Toyota Sienna?
AFAIK (this is based on my memory of discussions at the old site), the JBL-problem/recall was for 2005 Siennas “only”…..and only a limited production range were affected. For 2004 & reportedly some 2005s, the “battery-saver” feature does not work how most reasonable people would think it should work.
What happens when you reverse a battery cable?
Reversing the battery cables creates a surge of electrical current that can easily damage the battery. When you reverse the polarity of the jumper cables, you create a drastic increase in the amount of electrical current that runs through them.