SL55/63/65/R230 AMG: Electrical issues ?
Thread Starter
Newbie
Joined: Jun 2023
Posts: 3
Likes: 1
From: Danville, VA
2005 SL65
Electrical issues ?
Hi
I need some guidance, i keep getting random error messages pop up on the screen, i think they are all related to the fact convenience functions error, they can be anything from a mirror turn signal bulb, a tire pressure sensor, auto light sensor etc they come on and then go off.
I have had both batteries replaced but im thinking it may be the auxiliary battery relay.
When i drive the car the convenience functions error goes away and it says the functions are available again, but if i park, turn it off and turn it on then the error comes back....
I need some guidance, i keep getting random error messages pop up on the screen, i think they are all related to the fact convenience functions error, they can be anything from a mirror turn signal bulb, a tire pressure sensor, auto light sensor etc they come on and then go off.
I have had both batteries replaced but im thinking it may be the auxiliary battery relay.
When i drive the car the convenience functions error goes away and it says the functions are available again, but if i park, turn it off and turn it on then the error comes back....
Member
Joined: Mar 2004
Posts: 163
Likes: 8
From: San Diego
2003 SL
If your aux battery is low when you start the car, it will be unhappy... some will reset on their own.
A quick check is to test the battery voltage BEFORE you start the car... then after it is running, check it again... a lot can be told from these 2 values alone.
Been debugging my 2003 SL and had this issue, and a brand new die hard that went bad in a week...
Greg
A quick check is to test the battery voltage BEFORE you start the car... then after it is running, check it again... a lot can be told from these 2 values alone.
Been debugging my 2003 SL and had this issue, and a brand new die hard that went bad in a week...
Greg
