W202 boot lock and key

[frostbite]

Hi All,

I need a boot lock mechanism (just the basic barrel really) for a W202 boot.
The current one will not open with a key, works fine with the remote fob or console button. So I need one with the metal key to go with it please..

Cheers in advance..

 

[a111r]

They often seize up with disuse. Can you not soak it in penetrant etc, then you can use your own key?

I would hazard a guess that a w210 part is the same from memory, having had a few of both.

Yes, it looks the case, rather dear for used, tho'
http://www.ebay.co.uk/itm/Mercedes-...Domain_3&hash=item2334725b97&autorefresh=true

 

[Dec]

Freeing up the lock will be a better solution, give it time, try flooding the lock barrel with WD40, regularly, and have the boot lid in the open position, so as that the oil will seep down into the lock mechanism.

Will the key blade fully enter the lock barrel?... if so, will it turn anti-clockwise?

Dec

 

[frostbite]

Thanks for the advice chaps, but I'm deducing that as the spare fob has no key in it and I can't get the main key all the way in, that a key has broken in the lock and left a bit of itself in there. I've dismantled it as far as can be done. but it's going to be a new lock and key. As the battery is in the boot, I want to be able to open it even if the battery is flat.

 

[a111r]

I don't think these keys break in the lock, they're substantial keys and the design means you can't get much torque on them. It's just a partially seized barrel (mine needs this attention, too).

The vacuum locking system still works with a flat battery, something like 20 lock/unlock cycles until the stored vacuum exhausts (engine not run).
Proven, as I've been in and out of my project car for a couple of months without starting it, and the vacuum has just run out.

 

[Dec]

If you are absolutely sure there is a piece of key in the lock barrel then it will be just as easy to remove it as it will be replace the existing lock barrel with another. The guide is for an earlier lock than yours but the barrel removal is the same.
Guide here… W202 Boot Lock Fix. - Mercedes-Benz Owners' Forums

An MB dealer will cut a key blade from your VIN, no idea of the cost.

There is the possibility that there is not a piece of key in the lock so it might be wise to try the WD40 anyway, just in case.

Dec

 

[Nasco12]

I think the chances are that it is a seized lock. I tried Dec's solution over the course of several weeks with no success. Eventually, I had to remove the lock and disassemble it. The levers had to be pressed out. Dec has another HowTo on that somewhere.

 

[frostbite]

Thanks all again... I'll have another bash at freeing it up, then a get another key cut anyway so I have a spare.

 

[Lenny63]

Mine is the same
Is it such a big deal though ?
I got caught out last year when my batt died in storage.
I later found that if you use the blade key to get into the car via drivers door , pop the bonnet, there is a special jump start location which will get the the beast roaring again and you can operate boot via normal lock inside and/or remote

 

[Dec]

Not such a big deal if it’s just a flat battery and it happens somewhere that you have easy access to another 12v power supply, however, if the vacuum actuator in the boot lock fails or the vacuum pump fails then the only easy way into the boot is with the key blade.

Preventative maintenance, in the form of a little squirt of oil into the lock about twice a year and a test of the key in the lock is all that’s needed to keep the lock from seizing.

Dec

 

[frostbite]

Mine is the same
Is it such a big deal though ?
I got caught out last year when my batt died in storage.
I later found that if you use the blade key to get into the car via drivers door , pop the bonnet, there is a special jump start location which will get the the beast roaring again and you can operate boot via normal lock inside and/or remote

Ah, er, where is the special jump start location?

 

[Lenny63]

http://www.mbclub.co.uk/forums/engi...unable-gain-access-boot-due-flat-battery.html

I found mine last year using this thread

Put negative terminal on the engine lift mount (lift amg air box cover to expose big earthing point on engine)

Wella !!

 

[Peterjj]

Boot lock problem

I had this boot lock scenario happen to me when I was fitting a new radio in my c43, I had disconected the battery and stupidly shut the boot . I called out the RAC who managed to put power there with a battery pack and open it. I keep trying to free the lock and lube it regularly.to ensure this doesn't happen again I have fitted a ctek comfort lead that is connected to battery and sits safely in a clear area under the rear seat . A quick plug in and boot will open.