SLK/R170 dashboard gages wackey after battery insgtall

Apr 2, 2006 | 09:05 PM

harryco

Thread Starter

Newbie

Joined: Apr 2006

Posts: 5

Likes: 0

From: Glastonbury, CT

1999 SLK230

dashboard gages wackey after battery install

Reconnected battery (positive first then negative), heard spark when negative cable touched post. Dashboard gages are screwy, ie. no tach., no speedometer, gas and temp gages go crazy, odometer reads dashes, coolant light is on, dash lights are super brite and not dimmable, outside temp reads -38C and clock is set to 24hr mode. What happened! All fuses are fine. Is there a reset of some kind or a relay stuck (where are the relays). H E L P !

Last edited by harryco; Apr 3, 2006 at 02:31 PM.

Apr 2, 2006 | 09:09 PM

harryco

Thread Starter

Newbie

Joined: Apr 2006

Posts: 5

Likes: 0

From: Glastonbury, CT

1999 SLK230

dashboard gages wackey after battery install

Sorry, forgot to mention:

1999 SLK230

Thanks

Last edited by harryco; Apr 3, 2006 at 02:31 PM.

Apr 3, 2006 | 01:06 AM

E-Klasse

MBWorld Fanatic!

Joined: Mar 2002

Posts: 1,537

Likes: 2

From: Arizona, USA

W205 C300

Was the key in the on position when the battery was reconnected or the doors open. Odd that they were zapped when things were off. You didn't reverse the polarity of the battery? There must have been a load in order to get a large spark.

Apr 3, 2006 | 05:16 AM

bazzle

Senior Member

Joined: Apr 2005

Posts: 374

Likes: 3

Remove Batt neg lead. Wait 30 mins.
reconnect.
There will always be a small zap due to capacitance in leads etc.

See how you go.

Bazzle

Apr 3, 2006 | 07:39 AM

harryco

Thread Starter

Newbie

Joined: Apr 2006

Posts: 5

Likes: 0

From: Glastonbury, CT

1999 SLK230

dashboard gages wackey after battery install

Key was not even in the ignition, doors were closed and nothing was on.

But why is the dash crazy?

Thanks

Disconnected battery again, this time for 4 hours with same result (including spart).

Battery is still disconnected again and will be left there until overnight.

Last edited by harryco; Apr 3, 2006 at 02:35 PM.