anton_shadow1
V50 Brake Pedal Feedback
Summary of the thread
The initial problem described involves strange brake pedal feedback in a 2009 Volvo V50, with brake components appearing fine. A potential cause suggested is undervoltage affecting the braking system. A similar issue in another vehicle was resolved by replacing a weak battery, which interfered with the ABS module. The solution involved addressing the undervoltage, confirmed by a workshop visit, resolving the brake feedback issue.
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4 comment(s)
anton_shadow1 (community.author)
Were there any other electrical symptoms besides the brake issue? Did a simple battery replacement resolve the problem, or was there any ABS module recalibration?
alexanderbaumann67
On the Megane, the only other symptom was that the stop/start system became unreliable. Replacing the battery completely solved the problem. The garage mentioned clearing fault codes from the ABS, but no recalibration. If your battery is old, it's worth swapping it out to rule it out, but it is probably best to let a workshop have a look.
anton_shadow1 (community.author)
Thanks for the advice! I took the car to a local workshop, and it turned out to be related to undervoltage. The total repair came to 240€.
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VOLVO
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V50
alexanderbaumann67
I had a similar issue with my old Renault Megane, though it felt spongy and inconsistent. After checking everything, a slightly weak battery was causing havoc with the ABS module. Have you checked your battery's health recently?