Většinu vozů značky Mercedes používá pro startování vozu jednotku EIS (Electronic Ignition Switch)
Mercedes jako jediný z výrobců vozidel používá tuto technologii, kdy v klíči je IR dioda a přijímač rovněž tak v EIS/EZS jednotce do které se klíč vkládá. Při vložení klíče dojde ke komunikaci mezi jednotkou a klíčem, je ověřeno zda se jedná o zapsaný klíč v jednotce a pokud ano, je následně umožněno otočení (zvuk cvaknutí po zastrčení klíče) rovněž se uvolní zámek volantu (ELV) pokud je jím vůz vybaven.
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Seznam vozů Mercedes které s IR klíčem:
| Model | Od | Do | Označení |
| GL450 | 2013 | 2015 | W166 |
| B180 | 2005 | 2017 | W245 & W246 |
| S600L | 1998 | 2006 | W220 |
| E290 | 1997 | 1999 | W210 |
| R63 | 2005 | 2013 | W251 |
| C250 | 1997 | 2015 | W202 & W204 |
| SL65 | 2004 | 2017 | W230 & W231 |
| E550 | 2003 | 2016 | W211 & W212 |
| S400L | 2000 | 2006 | W220 |
| CL CLASS | 2001 | 2017 | |
| ML350 | 2012 | 2015 | W166 |
| C320 | 2001 | 2006 | W203 |
| SLK300 | 2009 | 2017 | W171 & W172 |
| G500 | 2006 | 2018 | W463 |
| S500 | 1998 | 2013 | W220 & W221 |
| CLA220 | 2013 | 2017 | W117 |
| GLA200 | 2014 | 2018 | W156 |
| A170 | 2011 | 2012 | W169 |
| SL400 | 2015 | 2016 | W231 |
| CLS500 | 2004 | 2017 | W218 & W219 |
| S300 | 2006 | 2009 | W221 |
| CLS250 | 2014 | 2017 | W218 |
| GLK280 | 2008 | 2009 | |
| ALL MODELS | 1997 | 2015 | |
| SL63 | 2012 | 2018 | W231 |
| E220 | 2010 | 2016 | W210 & W211 & W207 & W212 |
| R280 | 2005 | 2013 | W251 |
| C160 | 2001 | 2006 | W203 |
| E400 | 2004 | 2016 | W211 & W207 & W212 |
| B170 | 2005 | 2012 | W245 |
| S600 | 2006 | 2013 | W221 |
| E280 | 1998 | 2009 | W210 & W211 |
| R550 | 2005 | 2013 | W251 |
| C240 | 1997 | 2006 | W202 & W203 |
| E55 | 1997 | 2009 | W210 & W211 |
| S400 | 2000 | 2013 | W220 & W221 |
| C63 | 2008 | 2015 | W204 |
| GL400 | 2014 | 2018 | W166 |
| C32 | 2001 | 2003 | W203 |
| SLK280 | 2005 | 2009 | W171 |
| G320 | 2006 | 2018 | W463 |
| S450 | 2009 | 2010 | W221 |
| CLA200 | 2013 | 2017 | W117 |
| GLA180 | 2014 | 2018 | W156 |
| A160 | 2011 | 2012 | W169 |
| SL350 | 2002 | 2014 | W230 & W231 |
| CLS400 | 2014 | 2017 | W218 |
| ML320 | 2005 | 2011 | W164 |
| CLS220 | 2014 | 2017 | W218 |
| GLK CLASS | 2008 | 2015 | |
| A45 | 2013 | 2017 | W176 |
| SL600 | 2003 | 2006 | W230 |
| E200 | 1998 | 2016 | W210 & W211 & W207 & W212 |
| R CLASS | 2005 | 2013 | |
| C CLASS | 1997 | 2015 | |
| VITO | 2004 | 2017 | W639 & W447 |
| E36 | 1997 | 1997 | W210 |
| S280L | 1998 | 2006 | W220 |
| S55L | 2000 | 2006 | W220 |
| E270 | 1998 | 2005 | W210 & W211 |
| R500 | 2005 | 2013 | W251 |
| C230 | 1997 | 2015 | W202 & W203 & W204 |
| E500 | 2002 | 2016 | W211 & W207 |
| S350L | 2003 | 2006 | W220 |
| C55 | 2004 | 2007 | W203 |
| GL350 | 2012 | 2018 | W166 |
| B160 | 2005 | 2012 | W245 |
| SLK250 | 2011 | 2017 | W172 |
| G CLASS | 2002 | 2018 | |
| S430L | 2002 | 2006 | W220 |
| CLA180 | 2013 | 2017 | W117 |
| GLA CLASS | 2014 | 2018 | |
| A CLASS | 2011 | 2017 | |
| SL CLASS | 2002 | 2018 | |
| CLS350 | 2006 | 2014 | W218 & W219 |
| ML250 | 2012 | 2015 | W166 |
| C300 | 2008 | 2015 | W204 |
| GLA45 | 2014 | 2018 | W156 |
| A250 | 2012 | 2017 | W176 |
| SL55 | 2003 | 2006 | W230 |
| E CLASS | 1998 | 2015 | |
| ML63 | 2005 | 2018 | W164 & W166 |
| B250 | 2012 | 2017 | W246 |
| VIANO | 2004 | 2017 | W639 & W447 |
| E350 | 2003 | 2016 | W211 & W207 & W212 |
| S280 | 1998 | 2013 | W220 & W221 |
| CLS CLASS | 2004 | 2017 | |
| R350 | 2005 | 2013 | W251 |
| C220 | 1997 | 2006 | W202 & W203 |
| E50 | 1996 | 1997 | W210 |
| S350 | 2003 | 2013 | W220 & W221 |
| C43 | 1997 | 2000 | W202 |
| GL CLASS | 2006 | 2018 | |
| B1560 | 2011 | 2017 | W246 |
| S550 | 2006 | 2013 | W221 |
| E250 | 1998 | 2016 | W210 & W207 & W212 |
| S430 | 1998 | 2006 | W220 |
| CLA CLASS | 2013 | 2017 | |
| GL63 | 2013 | 2016 | W166 |
| B220 | 2013 | 2017 | W246 |
| S65 | 2005 | 2013 | W220 & W221 |
| CLS320 | 2005 | 2010 | W219 |
| ML CLASS | 2005 | 2018 | |
| C30 | 2004 | 2007 | W203 |
| SLK200 | 2004 | 2017 | W171 & W172 |
| E63 | 2003 | 2016 | W211 & W212 |
| A220 | 2012 | 2017 | W176 |
| SL500 | 2002 | 2017 | W230 & W231 |
| CLS63 | 2006 | 2017 | W218 & W219 |
| ML550 | 2012 | 2014 | W166 |
| C36 | 1997 | 2000 | W202 |
| SLK55 | 2004 | 2017 | W171 & W172 |
| E320 | 1997 | 2005 | W210 & W211 |
| S250 | 2009 | 2013 | W221 |
| CLA45 | 2013 | 2017 | W117 |
| GLA250 | 2014 | 2018 | W156 |
| C200 | 1997 | 2015 | W202 & W203 & W204 |
| E430 | 1996 | 1997 | W210 |
| S320L | 1998 | 2006 | W220 |
| CLS300 | 2004 | 2006 | W219 |
| G63 | 2002 | 2018 | W463 |
| B150 | 2005 | 2012 | W245 |
| S55 | 2000 | 2006 | W220 |
| E240 | 1998 | 2009 | W210 & W211 |
| R320 | 2005 | 2013 | W251 |
| CL203 | 2001 | 2004 | W203 |
| GL500 | 2012 | 2016 | W166 |
| B200 | 2005 | 2017 | W245 & W246 |
| S63 | 2012 | 2013 | W221 |
| E300 | 1997 | 2016 | W210 & W211 & W207 & W212 |
| GLK350 | 2008 | 2015 | |
| C280 | 1997 | 2006 | W202 & W203 |
| SLK CLASS | 2004 | 2017 | |
| E60 | 1996 | 1998 | W210 |
| S420 | 2006 | 2009 | W221 |
| CLS55 | 2004 | 2006 | W219 |
| ML400 | 2015 | 2018 | W166 |
| C350 | 2001 | 2015 | W203 & W204 |
| SLK350 | 2004 | 2017 | W171 & W172 |
| G55 | 2005 | 2018 | W463 |
| S CLASS | 1998 | 2013 | |
| CLA250 | 2013 | 2017 | W117 |
| GLA220 | 2014 | 2018 | W156 |
| A180 | 2012 | 2017 | W176 |
| SL450 | 2017 | 2019 | W231 |
| E420 | 1997 | 2009 | W210 & W211 |
| S320 | 1998 | 2009 | W220 & W221 |
| CLS280 | 2008 | 2010 | W219 |
| GLK300 | 2009 | 2012 | |
| B CLASS | 2005 | 2017 | |
| S500L | 2002 | 2006 | W220 |
| E230 | 1998 | 2009 | W210 & W211 |
| R300 | 2005 | 2013 | W251 |
| C180 | 1997 | 2015 | W202 & W203 & W204 |