GLS Class (X167) Produced 2020 to present

Additional Keys

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Old Dec 10, 2023 | 03:55 PM
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2024 GLS 580
Additional Keys

I just got my 2024 GLS 580, and it’s a fantastic family hauler. Definitely the most luxurious car I’ve ever had.

One drawback however is that the sales associate told me a maximum of two keys can ever be programmed to the car? Does anyone know if that’s really the case? I live in NYC and use a valet service, so I’d love to leave a key with them like I did with our previous car, a Porsche Macan. But I’d be nervous to do that if that leaves us with only one other key.
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Old Dec 10, 2023 | 07:43 PM
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'20 GLS450, '17 S550 Sedan
Originally Posted by grahamrs
I just got my 2024 GLS 580... One drawback however is that the sales associate told me a maximum of two keys can ever be programmed to the car? Does anyone know if that’s really the case? I live in NYC and use a valet service, so I’d love to leave a key with them like I did with our previous car, a Porsche Macan. But I’d be nervous to do that if that leaves us with only one other key.
I've personally owned Mercedes with three SmartKeys programmed to the vehicle, so I don't believe your sales associate is correct.

I recommend that you consult the Parts Manager and Service Manager, since their departments work together on keys. Parts will place your key order with Germany (after an appropriately strict ID check and vehicle ownership validation). Once the key arrives, Service will complete the programming with your vehicle.

Good luck!

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Old Dec 10, 2023 | 08:10 PM
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'20 GLS450, '17 S550 Sedan
One more piece of anecdotal evidence...

I remember years ago, we had neighbors going through an acrimonious divorce. The husband drove a fairly new ML63, which he absolutely loved. At one point early in the war, the wife went to the dealership and requested an additional key (3rd key). Since she was listed on the vehicle registration, and her ID matched, Mercedes happily ordered a key for her. When it arrived, she secreted the ML63 to the dealership for the key programming, while her husband was out of town, and returned it to the garage without him knowing. Then she waited. You can see where this is going by now...

At one point a few months later, she waited until her husband took the ML63 on an overnight "business trip" about a two hours away (which she correctly suspected involved another woman). Then she had a friend drive her, in the middle of the night, to pick up the ML63. The next morning, the husband thought it had been stolen and called the police! He was so mad...

There were many more stories with their divorce, but suffice it to say... Their ML63 had 3 keys
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Old Sep 28, 2024 | 05:59 AM
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'12 E550, '10 ML350, '06 E350, '20 GLC300, '21 GLC300
Attach an air pod or similar to every fob. Chances of finding it increases tremendously. As for tracking a car on a clandestine trip, the Mercedes app has a find me features complete with satellite mapping. I can track anytime.
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Old Sep 28, 2024 | 11:23 AM
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There should be way more than 3 even, if I recalled correctly, it was 24 possible slots of which at least half were "master key" slots?

That said, if a key is gone and have to be removed from the vehicle, that slot is taken still even if the key was deactivated, so 24 (IIRC) permanent slots.
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Old Sep 28, 2024 | 02:01 PM
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'21 AMG53 wDPP & ARC, 19 GLC300 - Former-03 C240,2 ML BlueTecs,20 GLE450 E-ABC,15 Cayenne D,17 Macan
Originally Posted by W205C43PFL
There should be way more than 3 even, if I recalled correctly, it was 24 possible slots of which at least half were "master key" slots?

That said, if a key is gone and have to be removed from the vehicle, that slot is taken still even if the key was deactivated, so 24 (IIRC) permanent slots.
What's a "slot?"
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Old Sep 28, 2024 | 03:04 PM
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Originally Posted by mikapen
What's a "slot?"
There has to be a proper way that MB calls it but a taken data block like an efuse (not really) that can't be reversed in coding once it was programmed in the ECU.
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Old Oct 14, 2024 | 03:35 AM
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2020 GLS 450, 2024 GLS 580
Originally Posted by grahamrs
I just got my 2024 GLS 580, and it’s a fantastic family hauler. Definitely the most luxurious car I’ve ever had.

One drawback however is that the sales associate told me a maximum of two keys can ever be programmed to the car? Does anyone know if that’s really the case? I live in NYC and use a valet service, so I’d love to leave a key with them like I did with our previous car, a Porsche Macan. But I’d be nervous to do that if that leaves us with only one other key.
I lost a key to my old '20 GLS 450 and had to purchase two new keys because my vehicle and the new keys had to be re-programmed to match each other. Same is true for my new '24 GLS 580, but the major difference now is that I have insurance that covers the costs for reprogramming and key replacement if I lose another key.









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