Could blocked drain vents be causing door lock problems on my SLK?

My Mercedes SLK has a faulty driver's door lock. The door won't open straight away and takes many pulses of the key fob button. I had used WD40 on the locking solenoid, this worked better for a time, but is now just as difficult as before. I read recently of a similar problem on an SLK and they advised it could be blocked drains from the scuttle in front of the windscreen. If so, what's the remedy?

Asked on 27 November 2019 by David Jesney

Answered by Honest John
Blocked vent well drains are a different problem entirely and would only affect the locking if the receiver for the remote was situated on the bulkhead where it gets flooded with rainwater that cannot escape. These blockages are common at this time of year because of the large numbers of dead leaves getting into the scuttle.
Similar questions
One of the doors on my Peugeot 307 locked itself and has refused to unlock, both through the inside and through outside
I have a 2010 Mercedes-Benz SLK 200, which I bought last year for some much-needed fun after the first pandemic lockdown. Recently, I have noticed a large amount of water in the boot (spare wheel well)...
I have a 2011 Vauxhall Insignia 2.0 CDTi SRi and can hear water movement apparently coming from within the nearside sills? Is this possible, why is it there and how do I resolve this issue? Are there any...
Related models
High quality interior. Three roof options. Offered with 250 CDI diesel engine. Also available with 5.5 litre V8.
 

Value my car