Why does my car say battery alternator VISIT WORKSHOP?
Basically, car works fine… but at least once a day it gives me a “BATTERY ALTERNATOR- VISIT WORKSHOP” message… only pattern I see is that its usually cold out, but it could just be a coincidence.
Why does my alternator have a bad connection?
I would suspect a bad connection is the real cause but the alternator may have an intermittent problem internally. The simple and no cost items should be done first. I would first clean the connections to the alternator. If you work on the main output lead of the alternator be sure to remove the ground lead to the battery first.
What does it mean when battery and alternator are switched off?
In this case you may get error message saying: malfunction electrical consumers switched off. Check your batteries and alternator. • The battery control module (BCM) also activates the battery isolating relay (K57/2) if necessary. A distinction is made between 2 states:
What should I do Before I replace my alternator?
Before you replace the alternator make sure that your battery is not the problem. One thing you can do to troubleshoot your car is to go to Advance Auto Parts or AutoZone and have them do a FREE alternator / battery check. This test may be able to point you in the right direction. 3. Secondary Battery / Auxiliary Battery.
Basically, car works fine… but at least once a day it gives me a “BATTERY ALTERNATOR- VISIT WORKSHOP” message… only pattern I see is that its usually cold out, but it could just be a coincidence.
In this case you may get error message saying: malfunction electrical consumers switched off. Check your batteries and alternator. • The battery control module (BCM) also activates the battery isolating relay (K57/2) if necessary. A distinction is made between 2 states:
I would suspect a bad connection is the real cause but the alternator may have an intermittent problem internally. The simple and no cost items should be done first. I would first clean the connections to the alternator. If you work on the main output lead of the alternator be sure to remove the ground lead to the battery first.
Before you replace the alternator make sure that your battery is not the problem. One thing you can do to troubleshoot your car is to go to Advance Auto Parts or AutoZone and have them do a FREE alternator / battery check. This test may be able to point you in the right direction. 3. Secondary Battery / Auxiliary Battery.
Why is the main alternator output lead Hot?
The main alternator output lead is ‘hot’ (directly connected) to the battery. If the lead makes connection to ground without the battery being disconnected big sparks will fly. The voltage spikes are something to check into.
How do you test an alternator voltage regulator?
This test is a simple procedure to check alternator voltage regulator output. You need a digital multimeter for this test. Set the parking brake and shift the transmission to Neutral (manual) or Park (automatic).
When to disconnect battery cable to test alternator?
Never disconnect a battery cable while engine is running to test alternator, you may cause damage to alternator or other electrical components from the surge in amperage. If your battery appears to be leaking, then your voltage regulator has probably failed.
Where is the voltage regulator on a Mercedes Benz?
Turn your alternator pulley side down on your bench. The voltage regulator is partially obscured by a plastic cover on the back of the alternator. Remove the two bolts (red arrows, one 13mm and one 15mm) on the back and lift the plastic cover off.