SL-Class (R129) 1990-2002: SL 280, SL 300, SL 320, SL 500, SL 600, SL 60 AMG

SL/R129: Blink test... Check guidance

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Old Feb 6, 2016 | 04:18 AM
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w129, c43, 63 black
Blink test... Check guidance

Hi all happy 2016, bit late I know, just back from Xmas Hols.

This an ongoing roof fault saga on my 92 w129, I wondered if you can help me isolate and whether this is an ECU problem or a culmination or issues that with guidance and direction I can start checking the listed components and repairing/replacing them.....

I have multi-meter at the ready and a big box of tools !!!

An RST blink test has thrown up the following faults;

11 - limit switch right front locked
20 - Hardtop installed recognition circuit solenoid valve - Bar extended
27 - Insufficient volts
14 - Limit switch top down
29 - No axle vehicle speed sensor signal

In relation to the above

20 - no hard top on car
27 - battery was fully charged
14 - soft top is up and wont go down


Your thoughts and direction would be very much appreciated,

Many thanks J
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