Locked out

1998-Present CLK200, CLK230, CLK320, CLK350, CLK430, CLK500, CLK55 AMG, CLK63 AMG, CLK DTM AMG
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PeterQ
B Class
Posts: 16
Joined: Mon 26 Jan, 2015 6:18 pm
Model you own: w116
Region: Western Australia
Location: Bridgetown

Locked out

Post by PeterQ » Wed 25 Apr, 2018 11:02 pm

The CLK would not open today, no response to the key at all. The mechanical key fitted and turned but nothing happened. I think an interior light stayed on due to the switch in the wrong position. The battery indicator light on the key was pretty dim, so I replaced the batteries. This made the little light much brighter but still did not unlock the car. I started to plan jacking the car on to stands, getting underneath and somehow (?) getting to the bonnet latches. This did not look like a good way to spend next weekend.
But...
I discovered that the mechanical key would open the boot. Pulled out the courtesy light fitting. Confirmed which was the negative terminal by checking for continuity with earth (the boot latch). Connected my battery charger to the terminals of the courtesy light fitting. Pressed the button on the key and doors unlocked. Phew.
Now all I have to do at the weekend is tear the driver's door to bits to see why the mechanical key does not work.
2003 CLK500 convertible, latest successor to:
2006 W164 ML350 - 1999 S430L - Audi A6 C5 V8
Holden Crewman Cross 6 - Ford Territory - Holden Commodore VZ 6 speed Ute
Mercedes 450SEL 6.9 - Ssangyong Musso 3.2 - Mercedes 450SLC
and a litany of others...

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Ivanerrol
Mercedes Demigod
Posts: 5755
Joined: Sat 12 May, 2007 3:21 pm
Model you own: w204
Location: Melbourne

Re: Locked out

Post by Ivanerrol » Fri 27 Apr, 2018 2:42 pm

Before you pull the door apart, I would put a little bit of graphite on the key and work it in to the lock.
Since these "emergency" locks are used infrequently it may have just gunked up.
W211 - E240
W204 - C280
W210 - E240
Departed
W202 - C200, C180, C180
W126 - 380SE , 380SE (Ex SA Import), 560SEL
W124 - 300e, 260e (ex Japan)
W111 220s (Indonesia) 4 speed manual column shift
W123 230
W116 450SEL
W140 420SEL
W210 E240
W209 CLK 240
W201 190e 2.6 (ex U.K.)

User avatar
PeterQ
B Class
Posts: 16
Joined: Mon 26 Jan, 2015 6:18 pm
Model you own: w116
Region: Western Australia
Location: Bridgetown

Re: Locked out

Post by PeterQ » Thu 03 May, 2018 10:24 pm

So when the new battery also ran out of volts I had to do all that again. Looked for battery drain causes online and found many mentions of the seat control module. Then the mental light bulb glimmered into light - the driver's seat would not move when I got the car and I found the power cable had come adrift, so reconnected it. Thought nothing of it at the time, I found the same thing on a 928 that I bought some years ago. This time however it seems likely that it had been disconnected deliberately to avoid the power drain. Well at least it's not too difficult to fix.
2003 CLK500 convertible, latest successor to:
2006 W164 ML350 - 1999 S430L - Audi A6 C5 V8
Holden Crewman Cross 6 - Ford Territory - Holden Commodore VZ 6 speed Ute
Mercedes 450SEL 6.9 - Ssangyong Musso 3.2 - Mercedes 450SLC
and a litany of others...

User avatar
PeterQ
B Class
Posts: 16
Joined: Mon 26 Jan, 2015 6:18 pm
Model you own: w116
Region: Western Australia
Location: Bridgetown

Re: Locked out

Post by PeterQ » Sat 05 May, 2018 10:14 pm

and that would have worked fine if I'd remembered it was the passenger seat, not the driver's seat.
2003 CLK500 convertible, latest successor to:
2006 W164 ML350 - 1999 S430L - Audi A6 C5 V8
Holden Crewman Cross 6 - Ford Territory - Holden Commodore VZ 6 speed Ute
Mercedes 450SEL 6.9 - Ssangyong Musso 3.2 - Mercedes 450SLC
and a litany of others...

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