twinz

Hey everyone,

Just purchased a 2003 Sl55 with keyless go. The car was starting and running up to par. For some reason this morning the car was completely dead. There is no power to anything, no lights, doors dont unlock or lock(good battery in keyless go card), etc..So I dont have the little mechanical key to open up the trunk because all I recieved was the keyless go card, so I cant get to the rear battery. I put jumper cables onto the battery under the hood and what do you know, the car still didnt have any power even with the cables attached. Is there some sort of security mode that shuts down the batteries with the keyless go? Did I do something wrong with the card? Please any info would really be appreciated!!!

damian155

Something is drawing power.A tip - dont jumpstart it with another car ,use a portable jumper. And having the metal key is a must. My suggestion is to call road side assistance. theyll figure something out.

bosch man

...if you read the handbook it says always keep the keys on you incase of keyless go failure....you need to get the proper key mate.

AMGSport

Likely the rear battery is the culprit - at least it was in my case. Controls all the functions you mention.