Had a similiar problem 2 years ago. Two problems with my rollbar system were found after 10+ hrs of dealer shop time. (Luckily, I was only billed for 4hrs because the lead mechanic investigated and diagnosed as a time filler during the week!) (1) The rollbar ECU was found faulty ($1600 from dealer). (2) One of the rollbar rams was drawing excessive current ($3200 from dealer.) Remedy: Bought used ECU ($400.) Did not replace ram units--Rollbar deploys when activated. No error codes or fault lights illuminate.

Good Luck!

Crew

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94 W129
98 Audi A4
98 BMW R1100RT
95 Chev S-10 4x4 ZR2