What is the ignition switch on a Mercedes-Benz W211?
On W211 models, the ignition switch is referred to as the electronic ignition switch (EIS). The EIS is a plastic housing with a slot for the remote key. The key has a sequential code to prevent vehicle theft.
Why is my Mercedes Benz W211 remote key not working?
Low battery voltage when starting. High A/C voltage output from battery charging. Some models with electronic steering lock (ELS) can exhibit issues similar to an EIS failure. If you have any of the following symptoms, be sure to confirm the ELS is not the issue.
What to do if your Mercedes ignition switch is not working?
If you have a spare key try to see if you are experiencing the same symptoms with the other key. If the other key works, keep using it for a couple of weeks to verify that the issue is really the key and not the EIS. Try scanning your Mercedes-Benz for fault codes. Ideally using a Start Diagnostic Scanner.
What kind of battery does Mercedes Benz remote key use?
The EIS is installed in Mercedes-Benz models from C-Class to ML SUV vehicles, (W208 / W210 / W203 / W209 / W211 / W215 / W219 / W220 / W230). This article will cover replacing the battery in the black and chrome remote key, as well as some common problems and tips on faults and possible causes.
Low battery voltage when starting. High A/C voltage output from battery charging. Some models with electronic steering lock (ELS) can exhibit issues similar to an EIS failure. If you have any of the following symptoms, be sure to confirm the ELS is not the issue.
On W211 models, the ignition switch is referred to as the electronic ignition switch (EIS). The EIS is a plastic housing with a slot for the remote key. The key has a sequential code to prevent vehicle theft.
What are the common problems with Mercedes key fobs?
Common Mercedes Key Fob Problems Go to top 1 Mercedes key fob not working after battery change 2 Mercedes remote doesn’t work anymore 3 Keyless remote doesn’t lock/unlock the car 4 Mercedes key fob won’t unlock doors 5 Panic button doesn’t work 6 Trunk unlock doesn’t work
The EIS is installed in Mercedes-Benz models from C-Class to ML SUV vehicles, (W208 / W210 / W203 / W209 / W211 / W215 / W219 / W220 / W230). This article will cover replacing the battery in the black and chrome remote key, as well as some common problems and tips on faults and possible causes.