Auxiliary battery malfunction

Even if the auxiliary battery may have failed you may notice that your car starts and runs fine. You can typically drive the car if you stuck away from home. We don’t advice that you continue to drive the car with a failed auxiliary battery.

It is a concern if the main battery fails. Like every other electronic module or part it has life-time and eventually it will wear out and fail at some point.

Is it safe to drive with auxiliary battery malfunction ? The smaller battery is the auxiliary battery and it must be failing. Part of the point in the dual battery system is to keep you safely operating when one fails, so you may not notice anything besides the warning, but you should get the battery replaced to prevent any other problems. I have the same problem this morning. It say auxiliary battery malfunction in the dashboard.

So u may want to be sure if there is a boot battery. If your car only battery , it powers everything including starter, just like jap car.

Aux battery is a small battery under side dashboard. The complaint was for a auxiliary battery malfunction warning light. I called the service department and I am still under warranty but I cannot bring in the car until a week from now.

The vast majority of passenger vehicles on the road today have only a single, large battery. It’s generally located under the hoo although some makes and models have the primary battery in the trunk, near the spare tire. Mercedes E3auxiliary battery malfunction. After getting this notice, I replaced the auxiliary battery with a new, M-B battery , and the warning persists.

Brake hold and stop-start functions are not working. Is there something else I need to. The dealer covered the battery replacement under warranty.

I thought I would give some information on this battery as information appears to be scarce on the forums. Here’s How I Fixed It At Home - Duration: 19:02. Where is the battery located?

Need to know where it is located to do the checks. What have you tried so far?

He knew right away what the problem was, ordered me a new battery , and put it in today. The most common mode links the two batteries together, taking the load off the main systems battery and charging both batteries. The dual battery system also has two shutdown stages as well as an emergency mode that completely switches all functions from the main battery to the auxiliary battery.

They'll have a loaner for me on 26th and for that visit they're going to change the timing cover gasket (big job, been weeping a couple years), weatherstripping for sunroof (tightened it last fall for wind noise, developed creaking noise from tightening, and then when real cold the wind noise returned), both batteries, and the star on. Batteries fully covered.